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leakproofness的音標：leakproofness的英式發(fā)音音標為：[li:kp'ru:fn?s]leakproofness的美式發(fā)音音標為：[likp'rufn?s]...

Now generally used PTEE, EPDM and other material for the valve seat, so bubbles leakproofness good.現(xiàn)一般均使用PTEE 、 EPDM等材料,為閥座, 因此,氣泡密封性佳.Especially in automobile industry, the leakproofness of cylinder influences the perfo...

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