tvr

A kind of bi-directional TVR ( Thyristor Voltage Regulator ) is developed for middle and low voltage distribution networks with long lines and disperse power facilities .

为解决长线路和带有分散发电设备配电网的电压调节问题，开发、研制了一种用于中低压配电网、能双向调节电网电压的晶闸管电压调节器TVR（ThyristorVoltageRegulator）。

Background : The choice of a bioprosthetic vs a mechanical valve in tricuspid valve replacement ( TVR ) continues to be debated .

背景：三尖瓣置换术（TVR）应采用生物瓣膜抑或机械瓣膜的问题尚有争议。

Primary endpoint was a composite of cardiac death , non-fatal myocardial infarction ( MI ), stroke or target vessel revascularization ( TVR ) at1 year .

主要终点包括随访1年时的心源性死亡、非致死性心肌梗死（MI）、卒中或靶血管血运重建（TVR）。

The test results on380V voltage regulator are given , which show that the TVR controller implements well the functions of voltage regulation , fault protection , setting management , display and so on .

同时给出了控制器在380V电压调节器样机上的试验结果。试验结果表明：设计的TVR控制器能很好地实现调压操作、故障保护、定值设置、显示等功能。

Of these patients , 6 had mitral valve replacement ( MVR ) , 2 aortic valve replacement ( AYR ) and 1 tricuspid valve replacement ( TVR ) .

6例二尖瓣置换，2例主动脉瓣置换，1例三尖瓣置换。