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1·A high percentage of lead in steels solidifies at the tip of manganese sulfide inclusions.

一高比例的铅钢强化作用于锰硫化物夹杂物。

2·To improve the homogeneity of manganese sulfide and calcium fluoride, the machinability could be enhanced.

改善硫化锰和氟化钙的分布，将会改善切削加工性。

3·Based on fundamental of chemical precipitation, the superfine manganese sulfide was prepared by designed different technologies and conditions.

本文基于化学反应沉淀法的基本原理，通过设计不同的工艺路线和工艺条件制备硫化锰微细粉末。

4·SEM and TEM examination showed that the graphite in low carbon ductile iron formed nucleus and grew up based on the sulfide and oxide of manganese and calcium.

结果表明：低碳球墨铸铁中的石墨是以锰、钙等的硫化物与氧化物作为基底形核并长大形成的。

5·Aeration is customarily the first step in treatment for the removal of iron and manganese from well waters and a standard way to separate dissolved gases such as hydrogen sulfide and carbon dioxide.

井水除铁和锰位于处理的第一步，通常用的方法是曝气，同时曝气还可以除取溶解于水的气体硫化氢和二氧化碳。