词汇	mechanical end face seal
释义	mechanical end face seal 端面密封
随便看	problem of corruption problem of cost balance problem of crossing river problem of current situation Problem of Cyclic Matrix Inversion problem of demarcation problem of design problem of determining the order Problem of development problem of dimension problem of division problem of drifting problem of education problem of elimination problem of employment problem of environment Problem of environmental geology problem of environmental management problem of environmental protection problem of ethnic relation problem of evil Problem of face Problem of Factoring Large Numbers problem of farmers problem of feeding the people