halogen element短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 卤族元素 The globalization enterprises like Sony, Apple, HP, and Dell further raise their transition schedule to completely rule out the halogen element existing in their product. 国际大厂如索尼、苹果、惠普、戴尔等先后制订出无卤转化时间表，将大大加速电子产品的无卤化进程。 www.cpca.org.cn