premelted refining slag

• 预熔精炼渣

premelted refining slag的用法和样例：

例句

1. The melting characteristic of premelted refining slag and deep desulfurization of molten steel are experimentally studied.
   在实验室条件下进行了预熔精炼渣熔化特性测定及钢水深脱硫实验研究。