This will provide maximum flow but will not be mistaken for a closed valve because it is easily moved.

这将提供最大的流量，但不会被误认为是关闭的阀门，因为可以很容易地移动它。

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A closed valve is associated with a fluid passageway between the vial and the syringe barrel through a piston.

闭合阀件通过柱塞与小瓶和注射器筒体之间的流体通路相关联。

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Gas pressure may slowly build in the closed valve cavity, or quite rapidly in the reactive case. There are confirmed reports of ball valve structural failures.

气体压力可能会在封闭的阀腔内慢慢积累，或者在反应情况下相当迅速地积累，这是就极可能产生阀门故障。

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But for many of Mr. Refaat's counterparts, the global recession of the late 2000s closed an escape valve for Egypt.

WSJ: Arab World Built Colleges, but Not Jobs

Argentina's economic difficulties have closed off Paraguayans' traditional safety valve of migrating south.

ECONOMIST: Paraguay��s coming crunch