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这个起活工具都是用廢鋼料制成的,使用起来很方便。它有这几个好处:1)可以远离高温爐子进行操作,从而改善了工人的劳动条件;2)加热、冷却
This living tool is made of scrap material, easy to use. It has several benefits: 1) It can be operated away from the hot stove, thus improving the working conditions of workers; 2) Heating, cooling