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金刚石(shi)线(xian)💛一种直径怎么(me)算(suan)为6.3-7.2公厘的电力电缆，其外表(biao)面(mian)有罗纹(wen)镶宝石(shi)金刚石(shi)珠。金刚石(shi)珠重复(fu)使用机(ji)磨剂(ji)并所经步骤水流量冷(leng)却水和无尘室，华侈的质料也(ye)被水祛除。