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piston seals
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piston seals
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往复密封
释
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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photopolymerization
photopolymer photosensitive material
photopositive
photopotential
photopredissociation
photo primary process
photoprint
photoprint document
photo printer
photoprocess
photoproduced
photoproduct
photoproduction
photoprotein
photoproton
photopsia
photopsin
photopsy
photoptometer
photoptometry
photopyrolysis water splitting
photoradar
photoradiogram
photoreaction
photoreactivation
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