速英语 / 查找:lags” [共找到31条结果]
  • slags造句

    Application of optical basicity to metallurgical slags was discussed.讨论了光学碱度在冶金渣中的应用.The injurious ingredients contained in carbide slags were analyzed, and the appropriate control measures were proposed.分析了电石渣中的有害成分, 并提...