Methods total alkaloids in Nitraria was extracted by acid-base and the content of total alkaloids was determined by the acidic dye colorimetry.
方法采用酸碱提取法提取总碱，以硫酸阿托品为对照品，酸性染料比色法测定白刺总生物碱的含量。
The oxide content and surface acidic groups determine the surface chemical property of carbon black.
炭黑的氧含量、表面酸性含氧基团决定了炭黑的表面化学性质。
The interference of reductant is eliminated by indirect iodimetry in the weak acidic medium and the content of potassium iodate is determined by direct iodimetry under acidic condition.
在弱酸性介质中，利用间接碘量法消除还原物的干扰，于酸性条件下采用直接碘量法测定碘酸钾含量。
The results showed that the content of soluble reducing sugar decreased remarkably and the acidic value increased after the fermentation, some volatile organic acids were produced.
测定了发酵前后烟叶碎片的化学成分，结果表明，发酵后的烟叶碎片中的可溶性还原糖含量明显降低，同时有机酸性成分增多，酸值提高。
Carbon dioxide is a species of weak acidic gas, it is a erodent in oil and gas industries, its content in natural gas may vary from trace to more than 50%.
二氧化碳是一种弱酸性气体，它在石油及气体工业中是一种腐蚀剂，它在天然气中的含量少则痕迹，至50%以上。
The proximate analysis, ultimate analysis, inorganic oxide content and surface acidic or basic groups content were carried on for raw semi-coke and the activated semi-coke samples.
水热化学改性造成改性半焦表面酸性含氧官能团挥发，提高了表面碱性官能团含量；
I - was obtained from the kelp by alkali fusion, then oxidized by H2O2 in acidic solution, thus we can determine the iodine content by extraction spectrophotometry, which is about 426.
用碱熔法使海带中的碘以i-形式转移到溶液中，然后在酸性条件下用过氧化氢氧化，三氯甲烷萃取，经分光光度标准曲线法测得海带中碘含量大约为426。
Effect of the speeding additive on deposition rate, hydrogen evolution amount, content of phosphorus and corrosion resistance of deposit in acidic electrolyte has been studied.
研究了酸性化学镀镍溶液中加速剂对沉积速度、氢的析出量、镀层含磷量和镀层耐腐蚀性能的影响。
The acidic amino acid content of the enzyme was 17.29%, alkaline amino acid 4.50% and neutral amino acid 38.50%, and others were nonpolar amino acids.
该酶的氨基酸组成为：中极性酸性氨基酸占17.29%，极性碱性氨基酸占4.50%，极性中性氨基酸占38.50%，其它为非极性氨基酸；
Carbon dioxide is a species of weak acidic gas, it is a erodent in oil and gas industries, its content in natural gas may vary from trace to more than 0%.
二氧化碳是一种弱酸性气体，它在石油及气体工业中是一种腐蚀剂，它在天然气中的含量少则痕迹，至0%以上。
The pretreatment technology for removal of high-content impurity elements in copper anode slime in acidic medium is studied.
对高杂质铜阳极泥在酸性介质中的预处理脱杂工艺进行了研究。
The acidic tuff section owns gold element with average content of 110.
其中的酸性凝灰岩段金元素平均值110。
Analysis of amino acid composition of LPL shows that it has a high content of acidic amino acid, a few of basic amino acid but no Arg.
氨基酸组成分析表明，该凝集素富含酸性氨基酸，而碱性氨基酸含量较少，不含精氨酸。
Determine the content of calcium with the mixed acidic thionation decomposition sample in the tungsten concentrates mineral.
采用硫磷混酸分解试样测定钨精矿中钙的含量。
A determination is made of the relationship of the emission rate of fluorine during the evaporation of acidic ammonium phosphate slurry with the degree of neutralization and water content.
测定了酸性磷铵料浆在浓缩过程中氟的逸出率与中和度、含水率的关系。
When the water content reaches 3%, T1-16 colonization peaks and acidic environment is conducive to the growth of T1-16 and colonization.
含水量在3%的时候，T1 - 16的定殖数量最高，偏酸性的环境有利于T1 - 16的生长与定殖。
When the water content reaches 3%, T1-16 colonization peaks and acidic environment is conducive to the growth of T1-16 and colonization.
含水量在3%的时候，T1 - 16的定殖数量最高，偏酸性的环境有利于T1 - 16的生长与定殖。
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