spall粗: wide; thick研: grind; pestle粗研磨: rough grinding; rough lapping粗研磨剂: coarse abrasive粗研水泥: coarse ground cement下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:粗研，即可在微信中查询翻译
