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- Method: To extract lecithin from egg yolk with acetone and ethanol. 方法:用丙酮、乙醇提取蛋黄中的卵磷脂。
- A film of mucus and bacteria on a tooth surface. 齿菌斑牙齿表面一层粘液和细菌的膜
- acetone ethanol fermentatio 乙基丙酮发酵
- acetone ethanol fermentation 乙基丙酮发酵
- Bacteria are too small to see with the naked eye. 细菌太小,肉眼看不见。
- Many diseases are caused by bacteria. 许多疾病是由细菌引起的。
- Dissolution or destruction of bacteria. 溶菌作用对细菌的溶解或破坏
- Such a growth or colony, as of bacteria. 培养菌该种生长物或群落,如培养菌
- The presence of bacteria in the blood. 菌血症血液中细菌的存在
- He worked out methods to destroy bacteria on the seeds. 他研究出消灭种子上细菌的方法。
- A bacterium is identified as the cause for his duodenal ulcer. 一种细菌被断定为造成他十二指肠溃疡的根源。
- Professor Fang worked out a method to destroy bacteria on the seeds. 方教授想出了一个办法来消灭种子上的细菌。
- The synthesis of the low molecular weight polyacrylamide was imvestigated in the mixed solvents of ethanol and acetone. 以乙醇和丙酮为混合溶剂合成了低分子量聚丙烯酰胺.
- Observe carefully how the bacteria respond to this stimulus. 仔细观察细菌对这一刺激有什么反应。
- It dissolves in hot grease, paraffine, ethanol, chloroform, acetone and aether, but is insoluble in water. 该产品不溶于水,热溶于油脂、石蜡、乙醇、氯仿、丙酮、乙醚。
- Hot weather multiplied the bacteria in the food rapidly. 炎热的天气使食品中的细菌迅速繁殖。
- It is soluble in acetone, glacial acetic acid, glycerin and inorganic strong acid, not soluble in ethanol. 溶于丙酮、冰醋酸、甘油和无机强酸,不溶于乙醇。
- A similar mass of fibers formed by certain bacteria. 由某种细菌形成的类似的一束纤维
- These can use either gasoline or ethanol. 能用汽油也可以用酒精。
- The ginger powder extracted with acetone was 8. 6%. 用丙酮和鲜姜汁制取丙酮粉,得率为8.;6%25。