短語詞組短語pit -type carburizing furnace 坑式滲碳爐;井式滲碳爐pit batch type furnace 井式爐pit type annealing furnace 井式真空退火爐side pit type furnace 側(cè)井爐oil pit type furnace 多罐井式爐pit type electric furnace 坑式電爐pit batch -type furnace 坑式爐 返回 pit type furnace