B-the layers of wood together with glue.

乳胶把一层层木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图层使软光模式。

Separate the benzene layer with a separatory funnel.

漏斗出苯层。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把板岩劈成石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两层细胞(两胚层)，中间是凝胶状的中胶层。

The calcified layers become thicker and tidemark appears in advance.

软骨细胞活化增生，各层次排列紊乱，钙化层增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一层撒盐饼干放在烘板的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后是散逸层，这是大气的最外层。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）层层相叠形成，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧化物（cuprate）的材料，是由其他物质夹著一层氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采过石头的原址，这种石头成为设计的灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通过电镜实验,观察到水合二氧化硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千层糕为九层。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃是破坏臭氧层的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴的家伙都明白这个位面为七层。

The pond was covered in a brittle layer of ice.

池塘覆盖了一层易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿电缆半导电屏蔽层胶料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据块组织的础构建了两层嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖层、柱状层、底层及外壁内层所组成。

B-the layers of wood together with glue.

用乳胶把一木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图使用软光模式。

Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把板岩劈成石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两(两胚)，中间是凝胶状的中胶。

The calcified layers become thicker and tidemark appears in advance.

软骨化增生，各次排列紊乱，钙化增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一撒盐饼干放在烘板上的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后是，这是大气的最外。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）相叠形成，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧化物（cuprate）的材料，基本上是由其他物质夹著一氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采过石头的原址上，这种石头成为设计的灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通过电镜实验,观察到水合二氧化硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千糕为九。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃是破坏臭氧的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴的家伙都明白这个位面分为七。

The pond was covered in a brittle layer of ice.

池塘覆盖了一易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿用电缆半导电屏蔽胶料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块组织的基础上构建了两嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖、柱状、底及外壁内所组成。

B-the layers of wood together with glue.

用乳胶把一层层木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图层使用软光模式。

Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯层。

Only a skilled workman can split slate into layers.

只有匠才把板岩劈成石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两层细胞(两胚层)，中间是凝胶状的中胶层。

The calcified layers become thicker and tidemark appears in advance.

软骨细胞活化增生，各层次排列紊乱，钙化层增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一层撒盐饼干放在烘板上的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后是散逸层，是大气的最外层。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）层层相叠形成，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

为铜氧化物（cuprate）的材料，基本上是由其他物质夹著一层氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采过石头的原址上，种石头成为设计的灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通过电镜实验,观察到水合二氧化硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千层糕为九层。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃是破坏臭氧层的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴的家伙都明白个位面分为七层。

The pond was covered in a brittle layer of ice.

池塘覆盖了一层易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿用电缆半导电屏蔽层胶料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块组织的基础上构建了两层嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖层、柱状层、底层及外壁内层所组成。

B-the layers of wood together with glue.

用乳胶把一木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图使用软光模式。

Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把板岩劈成石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两(两胚)，中间是凝胶状的中胶。

The calcified layers become thicker and tidemark appears in advance.

软活化增生，各次排列紊乱，钙化增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一撒盐饼干放在烘板上的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后是散，是大气的最外。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）相叠形成，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

些称为铜氧化物（cuprate）的材料，基本上是由其他物质夹著一氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采过石头的原址上，种石头成为设计的灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通过电镜实验,观察到水合二氧化硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千糕为九。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃是破坏臭氧的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴的家伙都明白个位面分为七。

The pond was covered in a brittle layer of ice.

池塘覆盖了一易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿用电缆半导电屏蔽胶料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块组织的基础上构建了两嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖、柱状、底及外壁内所组成。

B-the layers of wood together with glue.

用乳胶把一层层木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图层使用软光模式。

Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯层。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把板岩劈成石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两层细胞(两胚层)，中间凝胶状的中胶层。

The calcified layers become thicker and tidemark appears in advance.

软骨细胞活，各层次排列紊乱，钙层厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一层撒盐饼干放在烘板上的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

散逸层，这大气的外层。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）层层相叠形成，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧物（cuprate）的材料，基本上由其他物质夹著一层氧铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采过石头的原址上，这种石头成为设计的灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通过电镜实验,观察到水合二氧硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千层糕为九层。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃破坏臭氧层的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连白痴的家伙都明白这个位面分为七层。

The pond was covered in a brittle layer of ice.

池塘覆盖了一层易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿用电缆半导电屏蔽层胶料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块组织的基础上构建了两层嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖层、柱状层、底层及外壁内层所组成。

B-the layers of wood together with glue.

用乳胶把一层层木粘合起来。

Create a new layer set to softlight mode.

（建立一个新图层使用软光模式。

Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯层。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把岩劈成石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两层细胞(两胚层)，中间是凝胶状中胶层。

The calcified layers become thicker and tidemark appears in advance.

软骨细胞活化增生，各层紊乱，钙化层增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一层撒盐饼干放在烘箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后是散逸层，这是大气最外层。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）层层相叠形成，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧化物（cuprate）材料，基本是由其他物质夹著一层氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采过石头原址，这种石头成为设计灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通过电镜实验,观察到水合二氧化硅具有微米亚微米纳米三结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗印尼千层糕为九层。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃是破坏臭氧层元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴家伙都明白这个位面分为七层。

The pond was covered in a brittle layer of ice.

池塘覆盖了一层易碎冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿用电缆半导电屏蔽层胶料研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块组织基础构建了两层嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖层、柱状层、底层及外壁内层所组成。

B-the layers of wood together with glue.

乳胶把一层层木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图层使软光模式。

Separate the benzene layer with a separatory funnel.

分液漏斗分出苯层。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把板岩劈石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两层细胞(两胚层)，中间是凝胶状的中胶层。

The calcified layers become thicker and tidemark appears in advance.

软骨细胞活化增生，各层次排列紊乱，钙化层增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一层撒盐饼干放在烘板上的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后是散逸层，这是大气的最外层。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）层层相叠形，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧化物（cuprate）的材料，基本上是由其他物质夹著一层氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采石头的原址上，这种石头为设计的灵感来。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

电镜实验,观察到水合二氧化硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千层糕为九层。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃是破坏臭氧层的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴的家伙都明白这个位面分为七层。

The pond was covered in a brittle layer of ice.

池塘覆盖了一层易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿电缆半导电屏蔽层胶料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块组织的基础上构建了两层嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖层、柱状层、底层及外壁内层所组。

B-the layers of wood together with glue.

用乳把一木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图使用软光模式。

Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把板岩劈成石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两细胞(两胚)，中间凝状的中。

The calcified layers become thicker and tidemark appears in advance.

软骨细胞活化增生，各次排列紊乱，钙化增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一撒盐饼干放在烘板上的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后散逸，这的最外。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）相叠形成，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧化物（cuprate）的材料，基本上由其他物质夹著一氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采过石头的原址上，这种石头成为设计的灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通过电镜实验,观察到水合二氧化硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千糕为九。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃破坏臭氧的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴的家伙都明白这个位面分为七。

The pond was covered in a brittle layer of ice.

池塘覆盖了一易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿用电缆半导电屏蔽料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块组织的基础上构建了两嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖、柱状、底及外壁内所组成。

B-the layers of wood together with glue.

胶把一层层木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图层使软光模式。

Separate the benzene layer with a separatory funnel.

分液漏斗分出苯层。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把板岩劈成片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两层细胞(两胚层)，中间是凝胶状的中胶层。

The calcified layers become thicker and tidemark appears in advance.

软骨细胞活化增生，各层次排列紊乱，钙化层增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一层撒盐饼干放在烘板上的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后是散逸层，这是大气的最外层。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚组织（珊瑚虫）层层相叠形成，类似岩。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧化物（cuprate）的材料，基本上是由其他物质夹著一层氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采的原址上，这种成为设计的灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通电镜实验,观察到水合二氧化硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千层糕为九层。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃是破坏臭氧层的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴的家伙都明白这个位面分为七层。

The pond was covered in a brittle layer of ice.

池塘覆盖了一层易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿电缆半导电屏蔽层胶料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块组织的基础上构建了两层嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖层、柱状层、底层及外壁内层所组成。

B-the layers of wood together with glue.

用乳胶把一层层木板粘合起来。

Create a new layer set to softlight mode.

（建立一个新的图层使用软光模式。

Separate the benzene layer with a separatory funnel.

用分液漏斗分出苯层。

Only a skilled workman can split slate into layers.

只有能工巧匠才能把板岩劈成石片。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

两层细胞(两胚层)，中间是凝胶状的中胶层。

The calcified layers become thicker and tidemark appears in advance.

软骨细胞活化增生，各层次排列紊乱，钙化层增厚，潮线前。

Line a single layer of saltine crackers on the foil-lined baking sheet.

把一层撒盐饼干放在烘板上的箔片。

Last is the exosphere, which is the outermost layer of the atmosphere.

最后是散逸层，这是大气的最外层。

Coral reefs are rocklike structures built by layers of coral organisms, called polyps.

珊瑚礁由珊瑚织（珊瑚虫）层层相叠形成，类似岩石。

These materials, dubbed cuprates, typically consist of copper oxide layers sandwiched between other substances.

这些称为铜氧化物（cuprate）的材料，基本上是由其他物质夹著一层氧化铜。

The Therme Vals is built from layer upon layer of locally quarried Valser Quarzite slabs.

瓦尔斯温泉建立在当地开采过石头的原址上，这种石头成为设计的灵感来源。

The hydrated silicon dioxide with three layers structure of micron-submicron-millimicron was observed through TEM.

通过电,观察到水合二氧化硅具有微米亚微米纳米三次结构。

Tapioca Starch is available from Indonesian groceries. Traditional Indonesian style mille-feuille should have 9 layers.

木薯粉可于印尼商店有售，正宗的印尼千层糕为九层。

Dedicated short range communication (DSRC).DSRC data link layer.

标准/规范英文名： (Road traffic and transport telematics (RTTT).

CFCs are the chief destroyers of the ozone layer.

氯氟烃是破坏臭氧层的元凶。

It should be clear to even the most leatherheaded basher that there are seven layers on this plane.

就连最白痴的家伙都明白这个位面分为七层。

The pond was covered in a brittle layer of ice.

池塘覆盖了一层易碎的冰。

A semiconductive shielding layer compound for mine cable has been developed.

简介了矿用电缆半导电屏蔽层胶料的研制。

By organizing data block partition, two layer nested bintree were built.

在数据分块织的基础上构建了两层嵌套二叉树。

The exine is composed of tectum, columellae, foot layer and endexine.

花粉外壁由顶盖层、柱状层、底层及外壁内层所成。