ethers民族精神ethern.【U】乙醚；醚；以太；太空ether starting device乙醚起动装置etherophosphoric acid磷酸一乙酯etherified urea resins醚化脲树脂Ether make or break.不成功，便成仁。ether sensitivity test乙醚敏感性试验ethero-sulfuric acid硫酸氢乙酯ether-alcohol solvent醇醚溶剂ether soluble substance乙醚可溶物etherification reaction醚化反应ether of crystallization结晶醚