方法应用彩色多谱勒超声检测137例孕10至17周的正常胎儿心脏四腔结构。
Methods Computerized ultrasonic doppler system was used to study the four-chamber view of 137 fetal hearts from 10 to 17 weeks of gestation.
介绍了较佳的多腔精密医用导管机头结构，并对两类典型多腔精密医用导管的机头定型段流场进行了数值模拟分析，获得了出口截面上的速度分布图。
By simulating of melts flow in the die for two type of multi-lumen precise medical catheters, distribution of velocity at the exit of die were obtained.
该天线由含有背腔结构的盘锥天线、盘锥顶盘与地板之间的短路结构、以及多板天线三个部分复合而成。
The antenna is composed of three antenna parts: the cavity-backed discone antenna, the short-circuited structure between the top plate of the discone and ground, and the multi-plate antenna.
对于C6150主轴箱箱体的工艺设计而言，由于箱体结构呈腔形，中间有隔板，加工面多，精度求较高。
C6150 spindle box box for the process design of the body is concerned, because cavity shape, structure of middle clapboard, processing surface much, higher accuracy.
最后，设计了使用E面交叉耦合滤波器和E面多模腔滤波器的构成的紧凑结构毫米波双工器。
Finally, new, compact millimeter-wave diplexers which employ cross-coupled E-plane filters and E-plane filters with over-moded cavities are analysed.
介绍了一种无飞边、多腔、圆截面橡胶密封圈压模的设计方法及制造技术，采用这种方法设计制造的模具结构简单、可靠，生产的产品质量良好。
The design technique and manufacture technology for a kind of multi-cavity, no-burr and round-section rubber sealing ring with multi-cavity and no-burr were introduced.
介绍了一种无飞边、多腔、圆截面橡胶密封圈压模的设计方法及制造技术，采用这种方法设计制造的模具结构简单、可靠，生产的产品质量良好。
The design technique and manufacture technology for a kind of multi-cavity, no-burr and round-section rubber sealing ring with multi-cavity and no-burr were introduced.
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