ph值变化 meaning in English
ph change(s)
ph variation(s)
Examples
- A solution which resists ph changes is known as a buffer solution
能够阻止ph值变化的溶液称为缓冲溶液。 - The previous literature on factors determining soil quality changes mainly focused on the natural processes of soil quality change , while socio - economic and policy factors tend to be neglected
另外，土壤ph值变化趋势值得关注。除华北地区的土壤酸碱性改善外，长江中下游和东北地区存在酸化倾向。 - Tone along with ph value change , when acidity assumes red , when neutrality assumes red to the reddish purple color , when the alkalinity assumes the reddish purple color , when the acidity to the thermally stable , is also stable to the light
色调随ph值变化，酸性时呈红色，中性时呈红至红紫色，碱性时呈红紫色，酸性时对热稳定，对光亦稳定 - Tem reveals that the complex possessed good dispersibility in the system and the status varied reversibility with the ph value and the size of the complex is within 20 ~ 40nm . the complex was characterized by ft - ir , uv - vis , fluoresence and electrical conductivity methods . paa - ag nanospheres were also synthesized by coordination of polyacrylic acid and silver ( i ) ion and queued in line in lr
本论文还以低分子量的聚丙烯酸和硝酸银为主要原料，通过控制体系的ph值合成响应环境ph值变化的聚丙烯酸银纳米微球和纳米柱状物，通过tem观察尺寸达20 - 40nm ，用ir 、 uv - vis 、荧光、电导率法分析聚丙烯酸和银的配位作用、所形成配合物的组成与结构，并将聚丙烯酸和硝酸银置于“线性反应器”中进行配位聚合，合成出线性排列的paa - ag纳米微球。 - 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 。