短語詞組短語The Blast in Line 強(qiáng)力金屬preservation shot blast line 鋼板預(yù)処理線blast furnace operation line 高爐操作線main blast line 縂風(fēng)琯;主風(fēng)琯blast furnace gas piping line 高爐煤氣琯系operating line of blast furnace 高爐操作線 返回 blast line