???????????? ????1.???????????????н???????? ????2.????????????????б????? ????3.?????????ж????????????????? ????4.??????????????????????????? ????5.???????????EPDM?????????????????50pphm*40??C*72С????????????е?豸?棬?飬???????? ???????????????????????????????￡?250??300?棩??????￡???40??60?棩?????????????????????????????????ο?????????????????л????????????С??200??48С???????50%??????????????20??25KV/mm??,????????????????????????????????е????????????????????ζ???????200?????????????????????????????????????????????????????????????豸??????t???????????е?????????????
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