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中空的刮架a与中空柱身b相接。大手柄c焊接在柱身的下端。冷却水由连管d进入柱身内腔,通过焊入的导钣e与刮架的上壁和下壁相接触。冷却水通过叉形管f和接管g导出。
Hollow scraper a and hollow cylindrical b phase. Large handle c welded to the lower end of the column. Cooling water from the pipe d into the column cavity, through the welded into the lead sheet e and scraper upper and lower wall contact. Cooling water is drawn through the forks f and g.