例句與用法

1. Valeric acid ethylester
   戊酸乙酯
2. Hengshun chemical industry is a modern enterprise which is the subordinate cooperation of anhuibaofeng group , mainly produces and develops fine chemicals . the company was founded in 1997 . at present , our main products are low - carbon fatty acid n - valeric acid , n - caproic acid , oenanthic acid , flavor series etc
   恒順化工廠是寶豐集團(tuán)下屬的一家以生產(chǎn)開發(fā)精細(xì)化工產(chǎn)品為主的現(xiàn)代型企業(yè)，具有強(qiáng)大的技術(shù)開發(fā)能力與豐富的生產(chǎn)經(jīng)驗(yàn)，同時(shí)也擁有先進(jìn)的生產(chǎn)與檢測設(shè)備
3. 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
   研究了添加不同前體物， g - y菌株生產(chǎn)聚-羥基丁酸和聚-羥基戊酸共聚物( phbv )的發(fā)酵條件，結(jié)果表明，此菌株能以丙酸或戊酸為前體，在蔗糖為碳源的條件下合成phbv共聚物；在2l發(fā)酵罐中，以丙酸為前體，發(fā)酵16小時(shí)開始流加丙酸，根據(jù)發(fā)酵液ph值變化控制丙酸流加量，發(fā)酵42小時(shí)，細(xì)胞干重、 phbv產(chǎn)量和含量分別達(dá)到35 . 8g / l ， 22 . 6g / l ， 63 . 13 。