semi-hermetical 半封闭
hermetical recovery 密闭回收
Hermetical Operation 密封操作
hermetical suction tube 密闭式吸痰管
hermetical sealing stress 封接应力
semi-hermetical compressors 半封闭压缩机
Cylinder compression pressure is an important parameter for measuring the hermetical state of an engine.
发动机汽缸压缩压力是检测发动机机密封性的重要参数。
The novel and hermetical structure is suitable for operation under the states of both positive and negative pressure.
新颖的密封式箱体结构，适用于正、负压力状态下的运行。
The lowering hermetical state of an engine will not only cause economy and power coastdown, but also worsen the emission evaluating indicators of exhaust gas.
发动机密封性降低，会造成发动机经济性、动力性下降及废气排放指标恶化，因此对各缸压缩压力的检测具有重要意义。
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