“浏阳霉素”的概念、定义、翻译、参考文献-科学参考

单词	浏阳霉素
释义	浏阳霉素 Encyclopedia 农学杀螨剂释 liuyangmycin浏阳霉素一种杀螨抗生素。有效成分为大环四内酯类物质。结构式中R1,R3=C2H5，R2,R4=CH3，称A组分；R1,R3,R4=C2H5，R2=CH3，称B组分；R1,R2,R3,R4=C2H5，称C组分；R1,R2,R3,R4=CH3，称D组分；R1,R2,R3=CH3,R4=C2H5，称E组分。浏阳霉素是由5个组分组成的混合体，粗提品中主要为A、B、C三个组分，各组分的杀螨活性基本相同。
随便看	number state number symbol number symbolism number system number-theoretic number-theoretical number-theoretic character number-theoretic difference set number-theoretic formula number theoretic function number-theoretic function number-theoretic predicate number-theoretic problem number-theoretic transform number-theoretic transformation number theory number three in palace examination number transformation number triangle number tuple number unit number variable number wall number π number π; ratio of the circumference of a circle to its diameter

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