父亲：不对，你一定知道！想想看，当别的孩子都在做作业、写字时，谁在课堂上坐着，光看人家做功课？
Father: Oh, yes, you do! Think! When other boys and girls are doing things and writing, who sits in the class and only watches how other people work?
光旋转连接器在工业领域的旋转作业设备中有着广泛的应用前景。
This subject can be used on the rotary operation machine in the industrial field and it has extensive application prospects.
该气砂轮在船舶锅炉、化工机械及各种机械制造和维修工作中，用于清除毛刺和氧化皮修磨焊缝、砂光、抛光等作业。
This air grinder is used for burr clearing, sanding, polishing, roll scale thining and welding in working ship, chemical machinery, mechanism manufacture repairing and working and so on.
应用推荐