大家都搜：
缸套密封环
1、cylinder───n.圆筒；汽缸；[数]柱面；圆柱状物
2、cylinder head───[机]气缸盖
3、customary packing───[包装]习惯包装
4、packing───n.包装；填充物；v.包装；装满；压紧（pack的ing形式）
5、packing fraction───聚集率；[核]敛集率
6、packing label───包装标签
7、ring ring───戒指
8、circumscribing cylinder───外切圆柱
9、oxygen cylinder───储氧筒，氧气瓶；氧气瓶；储氧筒
1、Basically, this compressor is not in the oil cylinder, the piston ring and packing usually PTFE.───这种压缩机气缸中基本上不含油，其活塞环和填料一般为聚四氟乙烯。
2、This kind of air compressor cylinder basically does not include any oil content in, the piston ring and packing is commonly ptfe.───这种空压机气缸中基本上不含油，其活塞环和填料一般为聚四氟乙烯。