precusor meaning in English
前体,先驱物
Examples
- Alumina sols of different content were prepared by using al ( o - sec - bu ) 3 as precusor , water as solvent and nitric acid as peptizer
以异丁醇铝为前驱物、水为溶剂、硝酸为胶溶剂制备了不同浓度的氧化铝溶胶，进而采用提拉法和旋覆法制备了致密氧化铝膜。 - At the same time , alumina polymeric sols were prepared by using al ( o - sec - bu ) 3 as precusor and sec - buoh as solvent . then compact alumina films were fabricated by electrophoretic deposition
以异丁醇铝为前驱物、异丁醇为溶剂制备了氧化铝聚合溶胶，进而采用电泳沉积工艺制备了致密氧化铝膜。 - 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。 - In this essay , based on the above mentioned study on binderless molding and self - sintering of green cokes , c - sic - b4c carbon / ceramics composites are successfully manufactured as follows : the nanjing green petroleum cokes with 12 % content of volatiles as carbon precusor , added by different contents of sic , b4c ceramic powders , are mixed and ball - milled together ; obtained carbon / ceramics composite powders are then molded and sintered at temperature as high as 1600
本文在此研究基础上成功制备出了c - sic - b _ 4c碳陶复合材料：以含挥发份12的南京生焦作为碳源，外加不同含量的sic 、 b _ 4c陶瓷粉末，混合球磨获得碳陶复合细粉末，模压成型，然后经1600烧结得到不同陶瓷含量的c - sic - b _ 4c复合材料。 - 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 。