sodium sulphide meaning in Chinese

硫化碱
硫化钠
硫酸钠

Pulps for paper . quantity determination of sodium sulphide in pulp liquors for papermaking
纸浆.制浆溶液中硫酸钠含量测定
A new method was introduced in this paper : the practability of adopting sodium sulphide instead of hydrogen sulphide for colorific agent has been studied and determinated the optium test condition
研究了采用硫化钠溶液取代硫化氢作为显色剂的可行性，并确定了最佳的测定条件。
Abstract : in order to comprehensively recover the valuable metals , it ' s necessary to use the method of removal of impurity of sodium sulphide in ammonium molybdate production with high tungsten and low potasium molybdenum concentrate . the process of comprehensive utilization of this slag was related
文摘:使用高钨低钾钼精矿生产合格的钼酸铵时，仍需要采用硫化钠除杂的方式，以达到综合回收有价金属的目的，本文详述了该渣的综合利用过程。