tub scouring machine

例句：

1. 1. This new model of tubscouring machine is more efficient thanthe old one.
   这款新型洗桶机的工作效率比旧款更高。
2. 2. Theengineers are using thistub scouring machine toclean the oil tank.
   工程师们正在使用这款洗桶机来清洗油罐。
3. 3. The tub scouring machine hasbeen a great help in cleaning the factoryfloor.
   这款洗桶机在清洁工厂地板方面起到了很大的帮助作用。