grinding work短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 磨工工作 Thus, when the materials are grinded for the second time, the machine is mainly doing grinding work not crushing work, so the capacity of second grind is improved greatly. 这样的物料进行二次研磨时，减少了其破碎负担，功能已趋向于碾磨，因此，可以大大提高二次粉磨的产量。 chem17