短语词组短语shaft electrical arc furnace 竖炉;竖式电炉shaft electric arc furnace 竖炉电弧炉AC shaft Arc furnace 交流竖式电弧炉finger shaft arc furnace 竖式电弧炉shaft -electric arc furnace 竖炉电弧炉t finger shaft arc furnace t 竖式电弧炉 返回 shaft arc furnace