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活塞密封
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活塞密封
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piston seals
活塞密封
活塞与缸体之间的密封。活塞密封的密封槽开在活塞上,属于孔用密封圈。又称活塞环密封。
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Heron of Alexandria
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Herores of the Imperial Ming
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Hero triangle
Hero Wu Song
herpangina
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herpes simplex viral vector
herpes simplex virus,HSV
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herpetospermi semen
herpolhode
herpolhode cone
herpolhodograph
Herrenhausen Gardens
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