前体物的英文
precursor
例句与用法
- Recent advances in research of tsnas and their precursors
烟草特有亚硝胺及其前体物研究进展 - Distribution characteristics of nonylphenol and its precursors , nonylphenol ethoxylates in drinking water of a city
饮用水中壬基酚及其前体物的分布特性 - Uniform design was employed to optimize the culture conditions and the component of culture medium including carbon source , nitrogen source , phosphor source , growth factors , inorganic salts and precusor as well
利用均匀设计原理进行实验设计，以优化培养基中碳源、氮源、磷源、生长因子、前体物及无机盐成份的配方以及细菌培养条件。 - The synthesis of poly ( - hydroxybutyrate - co - - hydroxyvalerate ) by the strain g - iiiy from different precusor was studied . it was found that the strain g - iiiy could accumulate phbv with sucrose as carbon source and propionic acid or valeric acid as precursor . in 2l self - controlled fermentor , the dry cell weight , phbv concentration and phbv content reached 35 . 8g ? l - 1 , 22 . 6g ? l - 1 and 38 . 4 % respectively in the case of fermentation for 42 hours and the propionic acid as precursor
研究了添加不同前体物， g - y菌株生产聚-羟基丁酸和聚-羟基戊酸共聚物( phbv )的发酵条件，结果表明，此菌株能以丙酸或戊酸为前体，在蔗糖为碳源的条件下合成phbv共聚物；在2l发酵罐中，以丙酸为前体，发酵16小时开始流加丙酸，根据发酵液ph值变化控制丙酸流加量，发酵42小时，细胞干重、 phbv产量和含量分别达到35 . 8g / l ， 22 . 6g / l ， 63 . 13 。
