... non contact pick up无触点传感器 non contact seal非接触式密封 non conventional machining特殊的一种加工 ...
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non-contact seal [机] 非接触式密封 ; 非接触式轴封
hydrostatic non-contact seal 静压非接触密封
oil film non-contact mechanical seal 油膜非接触式机械密封
non contact type mechanical seal 非接触式机械密封
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