词族 · methyl
词形变化
中文词源
methyl 甲基，木精
由methylene的回构词。
英语词源
- methyl
-
methyl: see mead
- methyl (n.)
- univalent hydrocarbon radical, 1840, from German methyl (1840) or directly from French méthyle, back-formation from French méthylène (see methylene).
权威例句
- 1. Allene is an isomer of methyl acetylene.
- 丙二烯是甲基乙炔的一种异构体.
- 2. With methyl methacrylate the particle diameter increases linearly with conversion indicating particle aggregation.
- 采用甲基丙烯酸甲酯时,粒子直径随转化率呈直线增大,这就表明粒子发生了聚集.
- 3. In benzene or ethyl acetate solution rates increase linearly with methyl methacrylate concentration.
- 在苯或乙酸乙酯溶液中其衰减速度随甲基丙烯酸甲脂浓度呈直线地增大.
- 4. Various overlay mediums , such as agar , starchgel, methyl cellulose and tragacanth are used.
- 常用的覆盖培养基有:琼脂 、 淀粉凝胶甲基纤维素和黄蓍胶等.
- 5. A new method of synthesis of Vanillin from 2 methoxy 4 methyl phenol was studied.
- 研究了4甲基愈创木酚一步氧化法合成香兰素的新工艺.