soaring23发表:英文原文:Lead as an alloying element in steel containing up to 0,35 % lead by weight, aluminium containing up to 0,4% lead by weight and as a copper alloy containing up to 4% lead by weight. 中文:钢中合金元素中的铅含量达0.35%、铝含量达0.4%, 铜合金中的铅含量达4%;
soaring23发表:英文原文:Lead as an alloying element in steel containing up to 0,35 % lead by weight, aluminium containing up to 0,4% lead by weight and as a copper alloy containing up to 4% lead by weight. 中文:钢中合金元素中的铅含量达0.35%、铝含量达0.4%, 铜合金中的铅含量达4%;