短语词组短语open -hearth furnace dust 平炉尘Open -hearth furnace slags 平炉渣acid open -hearth furnace [冶]酸性平炉;酸性仄炉;酸性敞炉basic open -hearth furnace 碱性平炉;碱性敞炉tandem open -hearth furnace 涵义双床平炉 返回 open hearth furnace