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浮环密封
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旋转密封
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floating-ring seal
浮环密封
靠浮动金属圆环与轴或壳体间的极小间隙限制流体泄漏的非接触式动密封。
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Hayashi Tsuruichi
Hayashi Tsuruichi (1873—1935)
hay bale
Hay bridge
hay crushing machine
Hayden White
Haydn,Franz Joseph
Hayes-Tilden Compromise
Hayflick life span
Hayflick limit
Hayford ellipsoid
hay grade
Hay-Herrán Treaty
haylage
hay making
Hayman
Haymarket Massacre
hay meal processing machinery
Hayn crater
haynesville shale gas play
Hay-Pauncefote Treaty
hay pelleting mill
Hay Point
Hayreddin Ez Zirikli
Hays Code
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