The cut-off valve type, the internal leakage is not allowed.
对于截断阀类来说，内漏是不允许的。
Gas supply network small, internal leakage less pressure loss.
供气网络小，内部泄漏少，使压力损失降低。
Pump actual work process, their internal leakage there is, also known as slippage.
泵实际工作过程中，其内部存在泄漏，也称滑移量。
Pump actual work process, their internal leakage there is, also known as slippage.
泵实际工作过程中，其内部存在泄漏，也称滑移量。
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