Many pressure dominated testing valve is through pumping of relieving annulus pressure to realize open or shut down hole test valve and keep annulus pressure for certain all the time.

许多种压控测试阀均是通过环空加泵压打开，泄掉泵压关闭，开井过程中环空始终保持一定的开启压力。

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Secondly, testing the exterior wall's heating transfer coefficient in tier building, the differences between testing valve and design value is about 8.43%, and analysis the reason of the error.

其次对一栋多层建筑的外墙传热系数进行了测试，测试值和设计值相差8.43%，并分析了产生误差的原因。

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Adjustments for envelope squeeze on seats and valve testing are done by machine during factory assembly.

在工厂组装期间，采用机械设备对阀座和阀门测试封装挤压进行调整。

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For example, a medical company could request a glass model be built to spec for testing a new heart-valve catheter.

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In a startling break with tradition, the American College of Cardiology and the Society of Thoracic Surgeons will manage and run their own clinical trials testing expanded uses for transcatheter aortic valve replacement (TAVR).

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Valve's Joe Ludwig says that the TF2's robust community is ideal for testing out the new technology, and both companies are eager to see how the community reacts.

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