“directing substitution”的概念、定义、翻译、参考文献-科学参考

单词	directing substitution
释义	directing substitution Encyclopedia 理学导向取代释 directing substitution导向取代在化学合成反应中，在反应体系中引入一种或多种无机或有机添加剂（结构导向剂），或者通过外界实验条件的改变从而发生特定位置的取代，得到所需的特定结构目标产物的过程。
随便看	general notation general note general notion general notion of integral general number field sieve general oceanographicenvironmental survey general officer for frontier soldier affairs general orthogonal group general orthogonal series general or upper-ontology General Outline of Regius Constitution general out-migration rate general packet radio service general packet radio service, GPRS General People's Congress general personality right general perturbation general pharmacology general philosophy of water conservancy planning general physics General Plan For Stockholm 1952 general planning of nature reserve general plan of concentrators general plan of controlling sand in ancient China general plan of cultural relics protection and tourism development in Turpan area of Xinjiang

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