Check that the one-way valve is correctly installed.

检查单向阀是否安装正确。

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To change this four-way valve will only take five minutes.

换这个四通凡尔只需要五分钟。

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Fluid design, in the cover of the battery set a one-way valve.

液设计，在电池的上盖中设置了一个单向的安全阀。

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Now Valve has a way for developers to get their game an audience on Steam, its successful marketplace: Steam Greenlight.

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Others researchers use magnetism not only as a way of detecting the target, but also as a way of carrying it to the spin valve.

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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.

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