improvement n. 1.改良,改进,增进;进步。 2.利用,活用。 3.〔美国〕(增高房屋、土地等价值的)装修,改良措施。 4.更优秀的人,更进步的人。 improvement of soil 【农业】土壤改良。 This letter is an improvement upon [on] your last. 这封信比你上次的好。
Sometimes some surface improvement must be undertaken before it is advisable to plough . 有时候必须在适于犁耕以前进行一些表层的改良。
Surface improvement by laser coating of super fine ceramic powder 激光熔覆陶瓷超微粉表面改性
Xf : media designed for fast metal removal , deburring & surface improvements . moderate wear rate but very efficient due to reduced cycle times 用于快速切削,去毛刺和改善表面质量,尽管有一定的磨损,但由于减少了工作时间,该磨块显的非常高效。