释义 |
lead content短语¹⁴⁴⁹⁷²⁺² 基本例句 铅含量 Objective:The modern industry and the transportation development, the lead pollution question has been more and more prominent, in the blood the high lead content seriously affects child's health. 目的:现代工业和交通的发展,铅污染的问题已越来越突出,血内高铅含量严重影响儿童的健康。 cnki |