It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

灭火后不留痕迹，是取代卤代烷灭火器的替代品。

The sailing ships were superseded by the steamships.

帆船已被汽船所取代。

The enemy may have recourse to steel instead of poison.

敌人可能用凶器来取代放毒。

The use of machinery has superseded manual labour.

机器的使用已经取代了手工劳动。

He bears a grudge against me because I took his place in the office.

他对我怀恨在心,因为我取代了他在办公室里的位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许多办公室里, 打字机已被电脑取代。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取代产，生成原产苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基取代聚炔及其衍生呈现出光电磁等许多新颖的能。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明，偶氮基团的引入改善了8-羟基喹啉的生色能力，并且在乙中随着取代基由苯基变为萘基和蒽基时，化合的吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法制造一种在商业上切实可行的发动机来取代内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治阴切除术应该被扩大局部切除术取代？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

定制的双通道反渗透系统——取代现有的自动电镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼彩色电影中间片5245取代了5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类新型末端氰基取代含氟二苯乙炔类晶。

By and by electricity will take the place of coal.

不久以后, 电将取代煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合等规度的因素主要是取代基的极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO后来被更详尽和有效的蓝梅双套盖叫法取代了.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

着重介绍了磷铁粉取代部分锌粉制备锌粉漆的特,并给出了3类锌粉漆的参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好的天然支点，则应以固定耳片或环形锚栓取代该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意的中位取代四苯基卟啉(H2TPP)的分子构型。

It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

灭火后不留痕迹，是卤烷灭火器替品。

The sailing ships were superseded by the steamships.

帆船已被汽船所。

The enemy may have recourse to steel instead of poison.

人可能用凶器来放毒。

The use of machinery has superseded manual labour.

机器使用已经了手工劳动。

He bears a grudge against me because I took his place in the office.

他对我怀恨在心,因为我了他在办公室里位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许多办公室里, 打字机已被电脑。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等产物外，还生成还原产物苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基聚炔及其衍生物呈现出光电磁等许多新颖能。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明，偶氮基团引入改善了8-羟基喹啉生色能力，并且在乙腈溶液中随着基由苯基变为萘基和蒽基时，化合物吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法造一种在商业上切实可行发动机来内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治外阴切除术应该被扩大局部切除术？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

双通道反渗透系统——现有自动电镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼彩色电影中间片5245了5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类新型末端氰基含氟二苯乙炔类液晶。

By and by electricity will take the place of coal.

不久以后, 电将煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合物等规度因素主要是基极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO后来被更详尽和有效蓝梅双套盖叫法了.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

着重介绍了磷铁粉部分锌粉备锌粉漆特,并给出了3类锌粉漆参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好天然支点，则应以固耳片或环形锚栓该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意中位四苯基卟啉(H2TPP)分子构型。

It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

灭火后不留痕迹，是取卤烷灭火器的替品。

The sailing ships were superseded by the steamships.

帆船已被汽船所取。

The enemy may have recourse to steel instead of poison.

敌人可能用凶器来取放毒。

The use of machinery has superseded manual labour.

机器的使用已经取手工劳动。

He bears a grudge against me because I took his place in the office.

对我怀恨心,因为我取办公室里的位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许多办公室里, 打字机已被电脑取。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取产物外，还生成还原产物苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基取聚炔及其衍生物呈现出光电磁等许多新颖的能。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明，偶氮基团的引入改善8-羟基喹啉的生色能力，并且乙腈溶液中随着取基由苯基变为萘基和蒽基时，化合物的吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师设法制造一业上切实可行的发动机来取内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治外阴切除术应该被扩大局部切除术取？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

定制的双通道反渗透系统——取现有的自动电镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼彩色电影中间片5245取5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成一类新型末端氰基取含氟二苯乙炔类液晶。

By and by electricity will take the place of coal.

不久以后, 电将取煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合物等规度的因素主要是取基的极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO后来被更详尽和有效的蓝梅双套盖叫法取.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

着重介绍磷铁粉取部分锌粉制备锌粉漆的特,并给出3类锌粉漆的参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好的天然支点，则应以固定耳片或环形锚栓取该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到较满意的中位取四苯基卟啉(H2TPP)的分子构型。

It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

灭火后不留痕迹，是取代卤代烷灭火器替代品。

The sailing ships were superseded by the steamships.

帆船已被汽船所取代。

The enemy may have recourse to steel instead of poison.

敌人可用凶器来取代放毒。

The use of machinery has superseded manual labour.

机器使用已经取代了手工劳动。

He bears a grudge against me because I took his place in the office.

他对我怀恨在心,因为我取代了他在办公室里位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许多办公室里, 打字机已被电脑取代。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取代产物外，还生成还原产物苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基取代聚炔及其衍生物呈现出光电磁等许多新。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

验结果表明，偶氮基团引入改善了8-羟基喹啉生色力，并且在乙腈溶液中随着取代基由苯基变为萘基和蒽基时，化合物吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法制造一种在商业上切可行发动机来取代内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治外阴切除术应该被扩大局部切除术取代？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

定制双通道反渗透系统——取代现有自动电镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼彩色电影中间片5245取代了5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类新型末端氰基取代含氟二苯乙炔类液晶。

By and by electricity will take the place of coal.

不久以后, 电将取代煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合物等规度因素主要是取代基极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO后来被更详尽和有效蓝梅双套盖叫法取代了.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

着重介绍了磷铁粉取代部分锌粉制备锌粉漆特,并给出了3类锌粉漆参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好天然支点，则应以固定耳片或环形锚栓取代该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意中位取代四苯基卟啉(H2TPP)分子构型。

It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

灭火后不留痕迹，是取代卤代烷灭火器的替代品。

The sailing ships were superseded by the steamships.

帆船已被汽船所取代。

The enemy may have recourse to steel instead of poison.

敌人可能用凶器来取代放毒。

The use of machinery has superseded manual labour.

机器的使用已经取代了手工劳动。

He bears a grudge against me because I took his place in the office.

他对我怀恨在心,因为我取代了他在办公室里的位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许办公室里, 打字机已被电脑取代。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取代产物外，还生成还原产物苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基取代聚炔及其衍生物呈现出光电磁等许的能。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

果表明，偶氮基团的引入改善了8-羟基喹啉的生色能力，并且在乙腈溶液中随着取代基由苯基变为萘基和蒽基时，化合物的吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法制造一种在商业上切可行的发动机来取代内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治外阴切除术应该被扩大局部切除术取代？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

定制的双通道反渗透系统——取代现有的自动电镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼彩色电影中间片5245取代了5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类型末端氰基取代含氟二苯乙炔类液晶。

By and by electricity will take the place of coal.

不久以后, 电将取代煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合物等规度的因素主要是取代基的极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO后来被更详尽和有效的蓝梅双套盖叫法取代了.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

着重介绍了磷铁粉取代部分锌粉制备锌粉漆的特,并给出了3类锌粉漆的参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好的天然支点，则应以固定耳片或环形锚栓取代该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意的中位取代四苯基卟啉(H2TPP)的分子构型。

It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

不留痕迹，是取代卤代烷器的替代品。

The sailing ships were superseded by the steamships.

帆船已被汽船所取代。

The enemy may have recourse to steel instead of poison.

敌人可能用凶器来取代放毒。

The use of machinery has superseded manual labour.

机器的使用已经取代了手工劳动。

He bears a grudge against me because I took his place in the office.

他对我怀恨在心,因为我取代了他在办公室里的位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许多办公室里, 打字机已被脑取代。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取代产物外，还生成还原产物苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基取代聚炔及其衍生物呈现出光磁等许多新颖的能。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明，偶氮基团的引入改善了8-羟基喹啉的生能力，并且在乙腈溶液中随着取代基由苯基变为萘基和蒽基时，化合物的吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法制造一种在商业上切实可行的发动机来取代内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治外阴切除术应该被扩大局部切除术取代？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

定制的双通道反渗透系统——取代现有的自动镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼影中间片5245取代了5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类新型末端氰基取代含氟二苯乙炔类液晶。

By and by electricity will take the place of coal.

不久以, 将取代煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合物等规度的因素主要是取代基的极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO来被更详尽和有效的蓝梅双套盖叫法取代了.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

着重介绍了磷铁粉取代部分锌粉制备锌粉漆的特,并给出了3类锌粉漆的参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好的天然支点，则应以固定耳片或环形锚栓取代该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意的中位取代四苯基卟啉(H2TPP)的分子构型。

It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

灭火后不留痕迹，是卤烷灭火器的替品。

The sailing ships were superseded by the steamships.

帆船已被汽船所。

The enemy may have recourse to steel instead of poison.

敌人可能用凶器来放毒。

The use of machinery has superseded manual labour.

机器的使用已经了手工劳动。

He bears a grudge against me because I took his place in the office.

他对我怀恨在心,因为我了他在办公室里的位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许多办公室里, 打字机已被电脑。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫产物外，还生成还原产物苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基聚炔及其衍生物呈现出光电磁许多新颖的能。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明，偶氮基团的引入改善了8-羟基喹啉的生色能力，并且在乙腈溶液中随基由苯基变为萘基和蒽基时，化合物的吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法制造一种在商业上切实可行的发动机来内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治外阴切除术应该被扩大局部切除术？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

定制的双通道反渗透系统——现有的自动电镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼彩色电影中间片5245了5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类新型末端氰基含氟二苯乙炔类液晶。

By and by electricity will take the place of coal.

不久以后, 电将煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合物规度的因素主要是基的极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO后来被更详尽和有效的蓝梅双套盖叫法了.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

重介绍了磷铁粉部分锌粉制备锌粉漆的特,并给出了3类锌粉漆的参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好的天然支点，则应以固定耳片或环形锚栓该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意的中位四苯基卟啉(H2TPP)的分子构型。

It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

灭火后不留痕迹，是取卤烷灭火器的替品。

The sailing ships were superseded by the steamships.

帆船已被汽船所取。

The enemy may have recourse to steel instead of poison.

可能用凶器来取放毒。

The use of machinery has superseded manual labour.

机器的使用已经取了手工劳动。

He bears a grudge against me because I took his place in the office.

他对我怀恨在心,因为我取了他在办公室里的位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许多办公室里, 打字机已被电脑取。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取产物外，还生成还原产物苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基取聚炔及其衍生物呈现出光电磁等许多新颖的能。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

实验结果表明，偶氮基团的引入改善了8-羟基喹啉的生色能力，并且在乙腈溶液中随着取基由苯基变为萘基和蒽基时，化合物的吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法造一种在商业上切实可行的发动机来取内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治外阴切除术应该被扩大局部切除术取？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

的双通道反渗透系统——取现有的自动电镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼彩色电影中间片5245取了5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类新型末端氰基取含氟二苯乙炔类液晶。

By and by electricity will take the place of coal.

不久以后, 电将取煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认为影响聚合物等规度的因素主要是取基的极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO后来被更详尽和有效的蓝梅双套盖叫法取了.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

着重介绍了磷铁粉取部分锌粉备锌粉漆的特,并给出了3类锌粉漆的参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好的天然支点，则应以固耳片或环形锚栓取该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意的中位取四苯基卟啉(H2TPP)的分子构型。

It leaves no trace after fire extinguishing.It replaces for alkylogen annihilator.

灭火后不留痕迹，是取代卤代烷灭火器的替代品。

The sailing ships were superseded by the steamships.

帆船已被汽船所取代。

The enemy may have recourse to steel instead of poison.

敌人可能用凶器来取代放毒。

The use of machinery has superseded manual labour.

机器的使用已经取代了手工劳动。

He bears a grudge against me because I took his place in the office.

他对怀恨在心,取代了他在办公室里的位置。

In most offices, the typewriter has now been supplanted by the computer.

当今许多办公室里, 打字机已被电脑取代。

In this reaction,besides substitution products thiophenol etc,the reduction product benzene is formed.

反应中，除生成笨硫酚等取代产物外，还生成还原产物苯。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基取代聚炔及其衍生物呈现出光电磁等许多新颖的能。

The chromogenic responding ability increases as the substituent changes from phenyl to naphthyl or anthryl.

验结果表明，偶氮基团的引入改善了8-羟基喹啉的生色能力，并且在乙腈溶液中随着取代基由苯基变萘基和蒽基时，化合物的吸收光谱发生红移。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法制造一种在商业可行的发动机来取代内燃机。

Should radical vulvectomy be replaced by wide local excision for vulval cancers?

根治外阴除术应该被扩大局部除术取代？

Custom Built Dual Pass Reverse Osmosis System - Replaced existing automatic deionizer for plating operation.

定制的双通道反渗透系统——取代现有的自动电镀脱离子剂。

EASTMAN Color Internegative film, 5245. False sensitized. Replaced 5243. Discontinued in 1956.

伊士曼彩色电影中间片5245取代了5243。它也于1956年停产。

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类新型末端氰基取代含氟二苯乙炔类液晶。

By and by electricity will take the place of coal.

不久以后, 电将取代煤。

The tacticity of polymers is mainly influenced by the polarity of substituent group of vinyl monomer.

作者认影响聚合物等规度的素主要是取代基的极效应。

The R2SO were later replaced by the Blue two-suiter overcalls which is more descriptive and effective.

R2SO后来被更详尽和有效的蓝梅双套盖叫法取代了.

The performance of zinc dust paint manufactured by partially ferrophosphorus - substituted zinc dust were introduced.

着重介绍了磷铁粉取代部分锌粉制备锌粉漆的特,并给出了3类锌粉漆的参考配方。

Where good natural protection is not available a fixed hanger or ringbolt should replace the piton.

若该处并无良好的天然支点，则应以固定耳片或环形锚栓取代该岩钉。

MNDO calculations and group theory were carried out on tetraphenyl porphyrine(TPP) to obtain its optimum molecular geometry.

运用MNDO计算和群论，优化得到了较满意的中位取代四苯基卟啉(H2TPP)的分子构型。