a PW

Design and experimental study of a digital multigated PW ultrasound Doppler system

数字化多深度脉冲波超声多普勒系统的设计与实验研究

Current Control by a PW Modulated Switching Rectifier Instead of a Current Sensor

无电流传感器的电流控制调宽式开关整流器

PW, PWF type water pump is a single-stage , single suction, cantilever type centrifugal water pumps.

PWF型污水泵是 单级 、 单吸 、 悬臂式离心污水泵.

David : In general, a set of golf clubs in cludes : Irons: 3,4, 5,6, 7,8, 9, PW Woods : 1,3 , 5 and a putter.

大卫: 一般来说一套不杆包括的杆3、4 、 5、6 、 7、8 、 9 、 PW,及木杆1、3 、 5再加上一根推杆.

For its first 20 years, PW had only a handful of partners and grew modestly.

在最初的20年里, 普华(PW) 祗有为数不多的几位合夥人,并且发展的速度不快.

David: Ingeneral, a set of golf clubs includes: Irons: 3,4 , 5,6, 7,8, 9 PW Woods: 1,3, 5 and a putter.

大卫: 一般来说一套球杆包括铁球杆3,4,5,6, 7,8, 9PW, 及木杆1,3, 5在加上一根推杆.

Objective To design a digital multigated PW ultrasound Doppler system and validate the system in experimental study.

目的设计一套数字化脉冲波超声多普勒系统，以实现多深度血流频谱分析和显示。