O-rings tuaj yeem siv rau ntau yam kev siv vim lawv yog tsim los ntawm ntau yam khoom siv.O-rings feem ntau yog ua los ntawm roj hmab, los yog ntau tshaj yog ib tug polymer / elastomer.Cov polymers no feem ntau yog kho los ntawm vulcanization, uas ua rau muaj zog, ruaj khov thiab ntau elastic cov ntaub ntawv.P-ri...
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