乙醚，二乙醚
1. 乙醚：dierct vision objective prism 直物镜棱镜 | diethyl ether 乙醚 | diffeerence frequency 差频
2. 二乙醚：diesel-engine-driven fire pump 内燃机驱动的消防泵 | diethyl ether 二乙醚 | diethylene glycol 二甘醇
noun
1. a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic
Synonym: ether ethoxyethane divinyl ether vinyl ether ethyl ether