leadedadj.铅的动词lead的过去式和过去分词.leadv.引导；领先；带领；过 ... (的生活)；导致n.领头位置；主角；榜样；引言；铅lead toxicity铅中毒lead compasss铅笔圆规lead of screw螺旋导程lead chromate铬酸铅lead position领头位置lead forecast超前预报Lead isotopes铅同位素lead dimethyl二甲基铅lead coercion铅胁迫lead refinery炼铅厂,铅精炼厂