- beta substitution
- 取代: displace; replace; substitut ...
- 取代: displace; replace; substitute for; take over; supersede; supplant 国产货正在取代进口货。 home-made goods are edging out imported foreign goods. 他受了伤, 另一个选手取代了他。 he was hurt, and another player replaced him. 许多职员被计算机取代了。 many employees were displaced by computers
- o-β，β-dimethylacrylshikonino-β，β-: 二甲基丙烯酰紫草素
- 取代者；取代基: substituent
- ethylβ-aminocrotonateβ-: 氨基巴豆酸乙酯
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