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
The applied examples show that the magnetic coupler can achieve the non-contacting and hermetical drive without any leakage under the condition of high-pressure, ultrahigh-pressure, vacuum, etc.
应用实例表明，采用磁力驱动密封装置，对于高压、超高压和真空等工况均可实现无接触的密闭传动，达到无泄漏。
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。
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