double-ring oil sealing 双流环形油密封
double-hook oil ring 双刃刮油环
double hook oil ring 双刃刮油环
double-ring oil seal 双剖分油封
double slot oil piston ring 双槽油环
double-ring sealing oil system 双流环密封油系统
There was a new ringed structure on the driven pan to push back the oil and we also used single framework with one O ring instead of double framework to seal the oil.
在提前器从动盘上设计了一个挡油环形结构，并将原来的双骨架密封结构改为单骨架结构加O型圈密封结构。
Exclusive Rotork double 'o' ring sealing for proven protection against leakage in oil-filled service.
独家罗托克双重澳环密封证明防止渗漏充油服务。
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