The valve group is provided with the function of pressure compensation, which keeps the speed stable, not influenced by external load.

由于我司生产的抓斗阀组带压力补偿功能，流量跟外负载无关，速度不随负载波动。

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The patients in therapeutic group were performed with valve constriction . The patients in control group were performed with internal valvuloplasty .

治疗组病人住院期间行瓣膜环缩术，对照组病人住院期间行血管内瓣膜成形术。

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Pelvic vein is characterized by vein group, has no valve and its construct is weak. It often get change under a lot of facts.

盆腔静脉是一组以静脉丛为特征的静脉血管，没有瓣膜，结构较为薄弱，易受多种因素的影响而发生变化。

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Mike Schaffner directs information technology for the Valve and Measurement Group of oil and gas products and services company Cameron in Houston.

FORBES: Ending Apple's AT&T Problem

However, 5% of patients who got the valve had strokes, compared to 1% in the control group, and 16% had vascular complications, compared to 1% in the control.

FORBES: Heart Valve Victory

It took Schuler's group one year and 80 computer simulations before they cut any plastic prototypes of the airflow valve.

FORBES: Innovation