parent nucleus是什么意思

用法例句

Synthesis and characterization of cephalosporin nucleus 7-ACCA;

头孢母核7-ACCA的合成与表征

Two synthetic routes were caused out to construct 1β-methylcarbapenem bicyclic nucleus: the intramolecular carbene-inserting cyclization and the Dieckmann cy clization.

研究了 1β-甲基碳青霉烯双环母核的两种合成方法 :分子内卡宾插入环合法和 Dieckmann反应环合法。

Effects of addition of yeast nucleic acid on meat quality in broiler chickens;

添加酵母核酸对肉鸡肉质的影响

Effects of yeast nucleic acid on growth performance and carcass composition of broiler chicks.;

酵母核酸对肉鸡生长性能和胴体组成的影响

4% yeast nucleic acid.

在肉鸡日粮中添加酵母核酸,研究酵母核酸对肉鸡生长性能和部分血液指标的影响。