rottenstone / ˈrɒt nˌstoʊn /

🎓大学词汇烂石烂石头腐石烂石子

rottenstone 的定义

n. 名词 noun
  1. a friable stone resulting from the decomposition of a siliceous limestone, used as a powder for polishing metals.

更多rottenstone例句

  1. The unpainted surfaces will be kept clean and bright with rottenstone and oil or "Putz-pomade."
  2. Polishing is effected by wooden wheels fed with wet pumice-powder and rottenstone and by brushes fed with moistened putty-powder.
  3. Tripoli (and rottenstone) are used in polishing powders and scouring soaps as well as for filter blocks and many other purposes.