cut-out cock
... cut-out case熔线盒 cut-out cock截断阀门 cut-out propeller镂空式螺旋引擎 ...
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其中前一处的泄漏叫做内漏，也就是通常所说的关不严，它将影响阀门截断介质的能力。
The first one is called the leak within the leak, which is usually lax customs said that it will affect the media's ability to cut-off valve.
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