As she backed away carefully, the rubber seal of the refrigerator door caught the lip of the glass pitcher, which caused the slippery handle to slip from her hand.
她小心翼翼地往后挪，冰箱门上的橡胶密封圈碰到了玻璃水罐的边缘处。
The reason of the seal's failure was analyzed. A new mechanical seal was developed which has an edge-seal end face, and the rubber lip seal was replaced by the mechanical seal.
设计一种刃口型密封端面的机械密封，代替原泵轴封采用的橡胶油封。
The reason of the seal's failure was analyzed. A new mechanical seal was developed which has an edge-seal end face, and the rubber lip seal was replaced by the mechanical seal.
设计一种刃口型密封端面的机械密封，代替原泵轴封采用的橡胶油封。
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