Safety valves prevent fuel leakage.

安全阀可以防止燃料泄漏。

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But an infinite system essentially is one form which there's no leakage and the fuel is infinitely distributed which obviously is not realistic.

但是一个无限系统主要是一个形式，没有泄露，燃料是无限地，分布着，那明显是不现实的。

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Blowby is basically the leakage of compressed air-fuel mixture and burned gases past the piston rings into the crankase.

窜气，基本上是被压缩的空燃混合气和燃烧后的气体的泄漏，它通过活塞环进入曲轴箱。

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