To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩色多普勒超声检小腿肌肉静脉丛血栓的应用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的讨彩超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价彩超引导下甲状腺结节粗针穿刺组织学检查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的彩超对宫内早孕子宫内膜改变和子宫动脉血流值与异位妊比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用多普勒雷达资料，采用一种改后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动脉阻力普遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对多普勒频移校正，而得到物体的运动速度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运来展示多普勒速、材料、噪声检、超声距、轨道称重秤、光计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光多普勒系统，它能适应倾斜平面、任意曲面的离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用彩色多普勒检孕妇子宫胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例下肢静脉彩色多普勒超声检查，6例发现深静脉血栓，1例瓣膜功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估色多普超声检小腿肌肉静脉丛血栓的应用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价超引导下甲状腺结节粗针穿刺组织学检查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的超对宫内早孕子宫内膜改变和子宫动脉血流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用多普雷达资料，采用一种改进后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动脉阻力普遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对多普频移校正，进而得到物体的运动度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运行来展示多普、材料、噪声检、超声距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光多普系统，它能适应倾斜平面、任意曲面的离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用色多普检孕妇子宫胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静脉色多普超声检查，6例发现深静脉血栓，1例瓣膜功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩色多普勒超声检小腿肌肉静脉丛血栓的应价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的探讨彩超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价彩超引导下甲状腺结节粗针穿刺组织学检查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的彩超对宫早孕子宫变和子宫动脉血流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利多普勒雷达资料，采一种进后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动脉阻力普遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

能量重心校正法对多普勒频移校正，进而得到物体的运动速度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台一个小火车运行来展示多普勒速、材料探、噪声检、超声距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光多普勒系统，它能适应倾斜平面、任意曲面的离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采彩色多普勒检孕妇子宫胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静脉彩色多普勒超声检查，6例发现深静脉血栓，1例瓣功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩色普勒超声检小腿肌肉静脉丛血栓用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目探讨彩超诊断胎盘早剥临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目评价彩超引导下甲状腺结节粗针穿刺组织学检查性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目彩超对宫内早孕子宫内膜改变和子宫动脉血流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用普勒雷达资料，采用一种改进后交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%胎心存在生理性三尖瓣返流,肺动脉阻力普遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对普勒频移校正，进而得到物体运动速度模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运行来展示普勒速、材料探、噪声检、超声距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光普勒系统，它能适倾斜平面、任意曲面离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目本研究采用彩色普勒检孕妇子宫胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预妊高征发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静脉彩色普勒超声检查，6例发现深静脉血栓，1例瓣膜功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩色勒超声检小腿肌肉静脉丛血栓的应用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的探讨彩超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价彩超引导下甲状腺结节粗针穿刺组织学检查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的彩超对早孕膜改变和动脉血流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用勒雷达资料，采用一种改进后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动脉阻力遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对勒频移校正，进而得到物体的运动速度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运行来展示勒速、材料探、噪声检、超声距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光勒系统，它能适应倾斜平面、任意曲面的离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用彩色勒检孕妇胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静脉彩色勒超声检查，6例发现深静脉血栓，1例瓣膜功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩色多普勒超肌肉静脉丛血栓的应用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的探讨彩超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价彩超引导下甲状腺结节粗针穿刺组织学查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的彩超对宫内早孕子宫内膜改变和子宫动脉血流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用多普勒雷达资料，采用一种改进后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动脉阻力普遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对多普勒频移校正，进而得到物体的运动速度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个火车运行来展示多普勒速、材料探、噪、超距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光多普勒系统，它能适应倾斜平面、任意曲面的离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用彩色多普勒孕妇子宫胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静脉彩色多普勒超查，6例发现深静脉血栓，1例瓣膜功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩色多普超声检小腿肌肉静脉丛血栓的应用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的探讨彩超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价彩超引导下甲状腺结节刺组织学检查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的彩超对宫内早孕子宫内膜改变和子宫动脉血流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用多普雷达资料，采用一种改进后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动脉阻力普遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对多普校正，进而得到物体的运动速度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运行来展示多普速、材料探、噪声检、超声距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光多普系统，它能适应倾斜平面、任意曲面的离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用彩色多普检孕妇子宫胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静脉彩色多普超声检查，6例发现深静脉血栓，1例瓣膜功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩色多普勒超声检小腿肌肉静丛栓的应用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的探讨彩超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价彩超引导下甲状腺结节粗针穿刺组织学检查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的彩超对宫内早孕子宫内膜改变和子宫流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用多普勒雷达资料，采用一种改进后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺阻力普遍较高,胎心导管流单向自肺流向降主,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对多普勒频移校正，进而得到物体的运速度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运行来展示多普勒速、材料探、噪声检、超声距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光多普勒系统，它能适应倾斜平面、任意曲面的离面振量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用彩色多普勒检孕妇子宫胎盘床螺旋搏指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静彩色多普勒超声检查，6例发现深静栓，1例瓣膜功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩勒超声检小腿肌肉血栓的应用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的探讨彩超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价彩超引导下甲状腺结节粗针穿刺组织学检查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的彩超对宫内早孕子宫内膜改变和子宫动血流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用勒雷达资料，采用一种改进后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动阻力遍较高,胎心动导管血流单向自肺动流向降主动,显明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对勒频移校正，进而得到物体的运动速度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运行来展示勒速、材料探、噪声检、超声距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光勒系统，它能适应倾斜平面、任意曲面的离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用彩勒检孕妇子宫胎盘床螺旋动搏动指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢彩勒超声检查，6例发现深血栓，1例瓣膜功能不全。

To evaluate the value of color Doppler ultrasound to muscular veniplex thrombosis of calf.

评估彩色超声检小腿肌肉静脉丛血栓的应用价值。

Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

目的探讨彩超诊断胎盘早剥的临床价值。

Objective To evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.

目的评价彩超引导下甲状腺结节粗针穿刺组织学检查的准确性和安全性。

Objective To compare the uterogestation of endametrium alteration and uterine arteria blood flow with ectopic pregnancy using color Doppler ultrasonography.

目的彩超对内早内膜改变和动脉血流值与异位妊娠进行比较。

Using Doppler radar data, an algorithm for precipitation nowcast is set up by applying an improved cross-correlation extrapolation method (COTREC).

摘要利用雷达资料，采用一种改进后的交叉相关法(COTREC)建立了一种降水临近预报方法。

Results Color Doppler echocardiography showed that the embryocardia ductus arterious flow had a bright shunt from the pulmonary to descending aorta.

24%的胎心存在生理性三尖瓣返流,肺动脉阻力遍较高,胎心动脉导管血流单向自肺动脉流向降主动脉,显色明亮。

The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained.

用能量重心校正法对频移校正，进而得到物体的运动速度的模拟计算值。

The showcase, by running a small train, displays Doppler speed testing, materials detection, noise monitoring, supersonic distance testing, track weighing, and photoreader, etc.

该展台用一个小火车运行来展示速、材料探、噪声检、超声距、轨道称重秤、光电计次等等。

Dual light path Laser Doppler Vibrameter System that can meet the out-of-plane vibration measurement for the slope plane and any curved surfaces is first proposed.

首次提出双路激光系统，它能适应倾斜平面、任意曲面的离面振动量。

Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采用彩色检妇胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预妊高征的发生、发展及预后。

Deep phlebothrombosis was found in 6 of the 10 cases who were performed color Doppler ultrasonography on the lower extremity while valve dysfunction was found in one case.

10例行下肢静脉彩色超声检查，6例发现深静脉血栓，1例瓣膜功能不全。