The system is operated in PWM mode and realizes speed loop control.

It features simple circuit topology and ordinary PWM control way.

该变换器具有电路结构简单和采用普通的pwm控制方式的特点.

The Intel programmable timer 8254 system to generate and sample PWM waves.

并利用可编程计数芯片8254实现了PWM波形的产生与采样.

It is helpful for further research to SRD with voltage PWM.

本文有助于进一步开展SRD电压PWM方式研究.

PWC 150 function test on the study of heart and lung functions of juveniles.

PWC_(150)机能试验对少儿心肺功能的研究.

People-related items account for one-third of the scorecard used to evaluate partners at PwC.

普华永道对合伙人的评估打分卡中,与人力相关的事项占到三分之一.

PwC acknowledges this, but says that enterprises only need to control some data-not all of it.

普华永道也承认这点, 但是它称企业只需控制部分数据 —— 而不是所有数据.

PwC aims at maintaining high standard of professionalism.

普华永道的目的在于维持高水准的专业.

Experience in PWB technology and able to using PWB design tool for PWB design.

了解线路板设计工具,了解线路板设计制造流程和技术.

The CIC reduces the TCE of the PWB to match that of the ceramic.

铜—殷钢—铜减小了印制板的热膨胀系数,使它与陶瓷的热膨胀系数相匹配.

You can get more information for PWB materials desired per bellow website.

通过以下网址,您可以获得更多有关电路板材料的信息.

This paper proposes a fast method of computing PVZ curves using load impedance as dynamic step.

提出了一种基于阻抗动态步进的PVZ曲线快速求解方法.

PVX is worldwide, occuring wherever potatoes are grown.

PVX是世界性的, 发生在栽培马铃薯的任何地方.

Debate-1 : Electrical Isolation of the PVs Should be the Endpoint of Ablation for AF?

20热点问题辩论: 肺静脉电隔离是房颤导管消融治疗的必要终点?

Numerical simulations of PVS verify the analysis results with JJ 7 aircraft as an example.

并以JJ7机为例通过人机系统数字仿真验证分析结果.

Higher clinical stages were accompanied with greater number, wider diameter or faster blood flow of PVs.

结论:随小腿扩张交通静脉数目增加 、 内径增宽、血流速度升高,临床表现加重.

The main cause of operation failure was possibly related to the severe anterior PVR.

手术失败的主要原因可能与严重的前部PVR有关.

ObjectiveTo investigate the expression and localization of matrix metalloproteinases ( MMPs ) in epiretinal membranes of proliferative vitreoretinopathy ( PVR ).

目的　研究增生性玻璃体视网膜病变 ( PVR ) 视网膜前膜中基质金属蛋白酶 ( MMPs ) 的表达,探讨MMPs在PVR病理 过程中的作用.

PVR recurrent is major cause of failure.

手术失败的主要原因是PVR复发.

PVI started talking to the Massachusetts-based company last year about a potential takeover.

去年,元太开始与这家总部位于马萨诸塞州的公司就潜在的收购展开谈判.

Results In SRS group the postoperative compared to preopative PVF and FPP decreased ( P < 0.01 ).

结果分流组术后PVF及FPP与术前差异有显著性 ( P<0.01 ).