There are some methods of proportional valve test, which need many elaborate test instruments.

目前比例阀测试的办法比较多，所需的测试仪器繁多复杂。

youdao

An engine main pump test system was improved to be both applicable for pump test and fuel throttle valve test.

在长征系列发动机主泵试验系统现有的基础上经局部改造而建造了燃料节流阀试验系统。

youdao

Pressure valve test can be conducted in a dedicated test rig can also be carried out in an integrated test bed.

压力阀的测试可以在专用的试验台上进行，也可以在综合性试验台上进行。

youdao

The casual nature of that relationship is reflected in Valve's attitude about releasing the new mode -- Team Fortress 2's VR-enabling update in the coming weeks is essentially a giant beta test in which Valve will measure and analyze the way TF2 players interact with virtual reality hardware.

ENGADGET: Valve's Joe Ludwig on the uncertain future of virtual reality and partnering with Oculus

Despite delays on Tuesday and Wednesday, when it looked like there were too many cooks in the kitchen, today BP (and its government minders) fixed a leaky valve then moved on with their test of the containment cap.

FORBES: BP Cap Test Looking Good. Expect Relief Rally.