... 活塞杆Piston rod 活塞杆填料函Piston rod stuffing box 活塞环Piston ring ...
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短语
活塞杆填料函压盖
piston rod gland
;
piston rod stuffing box gland
活塞联杆填料函盖
piston rod stuffing box cup
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piston rod stuffing box
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piston rod stuffing box
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