单词rosin oil
na.: 【化】树脂油网络: 松香油；松油精；松香石油
【化学】树脂油,松香油
Now not direct survey rosin oil index of oil measuring appliance, therefore needs to design one method to survey.
现在没有直接的测量松脂油含油量的的仪表，所以需要设计一种方法来测量。