1.This invention provides an efficient, rapid and complete method for deleading the surface of lead brass and copper alloy.
本发明提供一种高效、快速、除铅彻底的铅黄铜及铜合金表面除铅工艺。
2.The invention provides an application of parsley in deleading reagent production.
本发明提供了香菜在制备排铅剂中的应用。