查询词典 acid ratio

The effects of temperature,time,EtOH consistency and stock ratio on extraction yield of 4 kinds of triterpene acid s were investigated by orthogonal test.

以科罗索酸提取率为指标，通过正交试验考察了枇杷叶中4种三萜酸提取效果的影响因素，其最佳提取条件为：温度80℃，提取时间3。

With high purity in 8 h when the mole ratio of tungstenic acid : acidic inorganic ligand : cyclohexene:hy...

当磷酸用量为2.5 mmol时，己二酸产率和纯度均较高。

It is prepared from titanium tetrachloride carried on an alcohol carrier that Mg and Li chlorides with molar ratio of 1:(2-20) are dissolved in alcohol, and by: co-dissolving Mg chloride and Li chloride in a low carbon alcohol and stirring at high speed in an inert medium to form micro-particles; reacting the said alcohol with titanium tetrachloride twice, adding organic acid polyester at first time, washing out uncarried titanium tetrachloride, and drying to obtain powdery pruduct.

它是由四氯化钛负载于将氯化镁和氯化锂共溶于醇形成的醇合物载体上组成，其中氯化锂与氯化镁的摩尔比为1∶2～1∶20。这种主催化剂组分的制备有两个步骤：(1)无水氯化镁和氯化锂共溶于低碳醇中形成醇合物，并在惰性介质中高速搅拌形成醇合物微粒；(2)醇合物与四氯化钛进行两次反应，其中第一次反应时加入有机酸多元酯。反应结束后用惰性溶剂洗去未负载的四氯化钛，干燥后得到呈粉末状的主催化剂组分。

Structural analysis of PBF5Sugar analysis showed this polysaccharide was composed of mannose and glucose in a molar ratio of 1:5.It contained 6.5% uronic acid.

PBF5的结构分析糖组成分析结果表明PBF5含有甘露糖和葡萄糖两种单糖，其摩尔比为1：5，糖醛酸含量为6.5%。

Bi-doped lead dioxide electrodes on Ti substrate were prepared by electro-deposition, and their performances were compared by measurements of the decolored ratio of Acid Bright Yellow 2G.

采用电沉积法制备分别掺杂了Bi，La和Ni的3种钛基PbO2电极，通过酸性嫩黄模拟废水的脱色率比较不同金属掺杂对电极性能的影响。

The results show that the sample prepared by coprecipitation method exhibits the highest activity and has the largest crystallite size, and after reaction for 140 min, 53.6% of rhodamine B is decolored; while for catalyst prepared by the citric acid complexation, the decoloration ratio is only 9.0%, though the latter has a higher surface area and smaller crystallite size than the former.

研究结果表明：这4种方法均能制备单一的钙钛矿型LaFeO3催化剂，其中，共沉淀法制备的催化剂具有最大的晶粒尺寸，最小的比表面积，仅为0.4 m2/g，显示出最强的光催化活性；在可见光照射下反应140 min，罗丹明B的脱色率达到53.6%。柠檬酸络合法制备的催化剂的比表面积最大，为8.1 m2/g，但其脱色率仅为9.0%。

Bi-doped lead dioxide electrode s on Ti substrate were prepared by electro-deposition,and their performances were compared by measurements of the decolored ratio of Acid Bright Yellow 2G.

并利用循环伏安法和扫描电镜，分别对掺Ni 二氧化铅电极和普通二氧化铅电极进行表征，发现提高电极析氧电位和改变电极表面晶粒分布是Ni修饰电极比未修饰电极催化效果提高的主要原因。

Degummed Bombyx mori silk was dissolved in a ternary solvent system of CaCl2/CH3CH2OH/H2O in 1∶2∶8 mole ratio at 60℃,and lyophilized SF was dissolved in 98％ formic acid to obtain regenerated SF solution for electrospinning.

将脱胶后的桑蚕丝溶解在摩尔比为1：2：8 的60℃CaCl2/CH3CH2OH/H2O三元体系中，将该溶液冷冻干燥后溶解在98％的甲酸中得到再生丝素溶液，对其进行静电纺丝。

The optimal desalinating process based on the following condition: desalination was optimized at effluent pH 4.0, flow volume 4 BV/h. Under these conditions, the volume ratio of resin and effluent in which the concentration of Na+was less than 30mg/L was about 1:6,and the loss rate of malic acid was 18.94%.

最佳上柱条件为：pH4.0的果酸废液，体积流量选择为4 BV/h，Na+浓度低于30mg/L的料液与树脂体积比约为6：1，苹果酸损失率为18.94%。

Lithium perfluoroalkylphosphonate was synthesized by LiF and perfluoroalkylphosphonate acid obtained by electrochemically fluorinating chlorodiisopropylphosphine. Some properties of a kind of electrolyte that was made from dissolving the lithium perfluoroalkylphosphonate in the mixed solvent with ethylene carbonate and dimethyl carbonate mass ratio 1∶1 were investigated, such as conductivity, stability toward hydrolysis and oxidative decomposition potential, and so on.

选取氯代二异丙基膦(C6H14PCl)为原料，利用电化学氟化方法，得到全氟烷基膦酸[(C3F7)2PF3]，(C3F7)2PF3与氟化锂反应得到全氟烷基膦酸锂Li[(C3F72PF4]，将其溶于碳酸乙烯酯和碳酸二甲酯质量比为1∶1的混合溶剂中得到电解液，考察电解液的电导率、抗水性及氧化分解电位。

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％。