查询词典 acid ratio

Moreover, when changing the equivalence ratio of isocyanic acid ester and hydrogen class compound, solid's performances also change along with it.

并且，改变异氰酸酯和含活泼氢类化合物的当量比，因交联密度的不同，所得的固结体的性能也随之有所变化。

Activity ratio of acrylonitrile-ammonium itaconic acid copolymerization system and the changes of AIA content in two methods of comnonomer adding were studied in this paper.

研究了丙烯腈－衣康酸铵共聚体系的竞聚率和不同加料方式下聚丙烯腈树脂中衣康酸铵含量的变化规律。

Silicasulfuric acid was used as the catalyst for synthesis of Cyclohexanone 1, 2-propylene ketal from cyclohexanone and 1, 2-propylene glycol. The effect of catalyst dosage, molar ratio and reflux time to reaction were investigated.

以磺化硅胶为催化剂，以环己酮和1，2-丙二醇为原料合成环己酮1，2-丙二醇缩酮，考察了催化剂的用量、原料配比和回流时间对反应的影响。

MRS displays the ratio between metabolic costs of rabbits cerebral changed, the deeply poisoning rabbits can appear lactid acid peak in acute stage.

MRS显示兔脑各代谢值之间的比值有改变，中毒深者急性期可见乳酸峰。

The optimal conditions were as follows: molar ratio of lauric acid to phytosterols 1.4:1, reaction temperature 120℃, SDS 1.5% and reaction time 4 hours. Under this condition, the yield of esterification reached 87.9%. After three steps of purification the content of phytosterol ester is about 93.1%. The product was determined as phytosterol laurate with FT-IR.

在酸醇摩尔比1.4：1，反应温度120℃，SDS用量1.5%反应时间4h的最优条件下植物甾醇酯化率可达到87.9%；反应所得的植物甾醇酯粗产品经3步提纯后纯度可达93.1%；对提纯过的产品进行红外光谱分析确定反应产物为植物甾醇酯。

The results indicates:immersing seeds of Acacia confusa、Leucaena glauca in sulphuric acid for 7'、1.5' and seeds of Albizia falca in hot water at 70℃ are the optimization treatment condiaions,its germination ratio reached 80%、57% and 46%.

结果表明，台湾相思和新银合欢分别用浓硫酸处理 7min、1.5 min，南洋楹用始温为 70℃的热水处理效果为最好，其发芽率分别达 80 %、5 7%和 46

The HPW/M-SiO2 catalyst is characterized by means of infrared-ray spectrum, X-ray diffraction and n-C4H9NH2 Potentiometric titration. The effects of amount of the catalyst, molar ratio of acid and alcohol, reaction temperature and reaction time on synthesis of methyl mandelate have been investigated.

运用IR， XRD和n-C4H9NH2电位滴定法测试技术表征HPW/M-SiO2催化剂，考察了催化剂用量、物料配比、反应温度和反应时间等对扁桃酸甲酯合成的影响。

The optimum conditions for making microspheres were obtained via orthogonal experiment with adsorptive capacity as the index as follows: the mass fraction of water phase is 2%(ratio between starch and β-cyclodextrin is 1:2), 110 mL oil, 3.3 g Span60, 6.6 g Tween60, 15 mL water, 18 mL assistant surfactant, 0.07 g metaphosphoric acid trisodium salt. The microspheres were characterized by microscope and the average particle size is about 329.3 nm with productive rate of 41%.

结果表明，质量分数为2%的可溶性淀粉与β-环糊精溶液为水相（二者的质量比为1：2），油相用量为110 mL，水相用量为15 mL，乳化剂Span60用量为3.3 g，Tween60用量为6.6 g，助乳化剂用量为18 mL，三偏磷酸钠用量为0.07 g，制备得到的复合纳米微球在扫描电子显微镜下，微球大小分布均匀，所得纳米微球产率为41%，平均粒径为329.3 nm。

Fumaric acid-containing wastewater was pre-treated by a method of microelectrolysis of iron and carbon , with the reaction time, pH value, temperature and ratio of iron to carbon studied.

采用铁炭微电解法预处理富马酸废水，研究了反应时间、pH值、温度、铁与炭的比例对预处理的影响，试验结果表明：当反应时间180min，铁炭比3∶1，反应温度313K时，CODCr去除率35。

Monocellular Raman spectrums of normal liver cell line (LO2) and carcinoma liver cell line (SMMC-7721) were studied with laser tweezers Raman spectrums system and each cell was investigated in three different points, the result of which showed; significant differences of average Raman spectrums were found between the normal cell and the carcinoma one; And, the spectra line of carcinoma cell became weak at the whole; Additionally, the spectral peak intensity ratio of normal cell at 1658cm^(-1) and 1450cm^(-1) was 0.63 while that of carcinoma was 0.99; Moreover, the structure and the amount of protein; nucleic acid, lipids and other such molecules had also changed.

本工作利用激光镊子拉曼光谱系统研究了人正常肝细胞株(LO2)和肝癌细胞株(SMMC-7721)的单细胞拉曼光谱，对于每个细胞在不同部位测三个点。实验结果显示：正常细胞和癌细胞的平均拉曼光谱存在显著差异；癌细胞谱线强度整体变弱；正常细胞的1658cm^(-1)处峰和1450cm^(-1)处峰的强度比值为0.63，癌细胞的为0.99；癌细胞的核酸、蛋白质、脂类等重要生物分子在结构或含量上都发生了不同的改变。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。