词汇	mechanical face seal
释义	mechanical face seal 机械面密封
随便看	protects slope protect status protects the hole method protects the trouble dispute Protects the trouble relations protect string protect structure protect switch protect swite protect system protect tab protect technology Protect the Ancestor Stones at all costs protect the children from harm Protect the children from harm protect the commission protect the country against foreign invasion protect the embankment protect the environment protect the environment against pollution protect the eyes protect the face protect the farmland protect the freedom of economy protect the health of one's teeth and mouth