methyl substitution 中文意思是什麼
methyl substitution
解釋
甲基取代- methyl : n. 【化學】甲基。
- substitution : n. 1. 代，代用，代替，更替，置換。2. 【化學】取代；【數學】代換；代入；【法律】預定繼承人；【語法】詞的代用。adj. -al ,-ary adj.
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The substitution of pervaporation for traditional separation in organic mixtures is of energy - saving and environment - protecting significance. in this paper, pervaporation of two kinds of organic mixtures is investigated : one is using ca membrane and ca - eva ( ethylene - co - ethylene acetate ) composite membrane for methanol removal from mtbe ( methyl t - butyl ether ), focused on the influence of casting solvent mixtures ; the other is utilizing proper membrane stuff and additive to separate p - xylene from m - xylene
本文對兩類有機有機混合體系進行了滲透汽化膜過程的研究，其一為醋酸纖維素（ ca ）膜及ca -乙烯醋酸乙烯共聚物（ eva ）復合膜用於甲基特丁基醚（ mtbe ）中少量甲醇（ 5 meoh ）的脫除，探討鑄膜混合溶劑及后處理技術對膜分離性能的影響。其二為運用適當的膜材料及添加劑去除間二甲苯（ mx ）中的少量對二甲苯（ 10 px ） 。 -
Three electrosynthesis methods of benzaldehyde and its derivatives are introduced in this paper, i. e., anodic oxidation of propenyl, hydroxyl and methyl of benzene rings, cathodic reduction of carboxyl of benzene rings, anodic substitution of methyl of benzene rings
摘要本文介紹了苯甲醛系列化合物的三種電合成方法：苯環上丙烯基、羥基和甲基的陽極氧化，苯環上羧基的陰極還原，苯環上甲基的陽極取代。 -
The advantages of substitution of biodiesel ( namely methyl esters of fatty acids ) instead of fatty acids in the production of fine chemicals are described, and the applications of biodiesel in surfactant industry, and in production of plastic auxiliary, alkyd resin, and leather chemicals are narrated
摘要論述了生物柴油（即脂肪酸甲酯）代替脂肪酸在製造精細化工品上的優勢，並列舉了生物柴油在表面活性劑工業、塑料助劑、醇酸樹脂、皮革化學品上的應用。
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