facing: n.1.【建筑】饰面,面层,覆盖面;敷面物,面料;面饰;墙面。2.(衣服等的)镶边,贴边,滚条。3.【机械工程】衬片;刮面;刮面法。4.【军事】〔pl.〕(军服的)领章,袖章。5.(茶等的)着色,色料。6.【军事】转变队列方向,看齐。短语和例子a cement facing 水泥墙面。 go through one's facings 被考试;受训练。 put sb. th
Dressing is definitely a treatment of a wheel face to restore or change its cutting action and any truing or sharpening of the face is purely coincidental 将砂轮平滑表面,包围在磨料附近的结合剂去除,使磨料锐角能适当地露出砂轮表面,以产生研磨能力之作业称之。