... piston coil spring 活塞式盘簧 piston compression ring 活塞压缩环 piston compressor 活塞式压缩机 ...
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piston ring gap clearance-compression 气环开口间隙
compression piston ring 活塞气环
barrel type compression piston ring 鼓形活塞压缩环
piston ring gaclearance-compression 气环开口间隙
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The piston rings carried in the ring groove are of two basic types: compression rings and oil-control ring.
安装在环槽中的活塞环有两种类型：压缩环和机油环。
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