optical rotation instruments

• 旋光仪

optical rotation instruments的用法和样例：

例句

1. Hence, the only difference in properties one should observe for the two carvones are the odors and the signs of rotation in a polarimeter.
   因此，它们在性质上的唯一区别应该可通过观测两种香芹酮的气味和旋光仪中旋光度的符号而得知。