在溶液中

Then,the tradition manner of crystallization was evaporating and crystalline,but this paper made the other method . The salt-mixture solution of the disodium hydrogen phosphate and the monometallic odium orthophosphate was put in ethanol.

传统的结晶方法是通过加热蒸发结晶，而本文则采用了一种新的结晶方法，在精调后的正磷酸盐混合溶液中加入乙醇，由于正磷酸盐不溶于乙醇，就会使正磷酸盐溶液达到过饱和，再通过搅拌，析出晶体。

The results are helpful to find the proper condition of Bunsen reaction and hydrogen iodide decomposition. Secondly, separation characteristics of 2 liquid phrase and side-reactions from HI、 H_2SO_4、I_2 were investigated experimentally in operating temperature range,from 20℃ to 70℃. The effects of solution temperature 、acid concentration and iodine concentration on separation characteristics of 2 liquid phrase and side-reactions were discussed.

其次，利用恒温型磁力搅拌器加热，使用全自动电位滴定仪滴定离子浓度，在自制的反应器上进行了HI、H_2SO_4、I_2的混合溶液的分层现象和副反应的实验，研究了不同温度、不同浓度的溶液中分层现象的出现，研究了水含量、温度和碘量对液液分离特性的影响和对副反应的影响。

When ferric iron concentration was high enough in the solution, jarosite was produced.

当溶液中Fe3+浓度达到一定程度的时候形成黄钾铁矾沉淀，而溶液的pH值会先变大后变小，维持在2.0～2.5之间。

Allow to stand in the dark for 5 minutes, compare the opalescence produced by viewing down the vertical axis of the cylinders against a black background.

于供试溶液与对照溶液中，分别加入硝酸银试液1.0ml，用水稀释使成50ml，摇匀，在暗处放置5分钟，同置黑色背景上，从比色管上方向下观察、比较，即得。

Following the development of the copper cup-electrode solution method for the spectrogra-phic analysis of open-hearth slags,a series of experiments was carried out to study the volatili-zation process in such a spectral light source.

第一阶段相当于第一高峯出现的期间，在这时并没有分馏现象，这表示溶液中的物质主要是经过溶液的翻腾作用而直接从液面进入放电区的。

The effect of sodium nitrite on the crevice corrosion of mild steel was studied by applying the wire beam electrode technique.

在5%NaCl溶液和5%NaCl+5%NaNO2溶液中，采用丝束电极技术测量了低碳钢缝隙内、外的自腐蚀电位和电化学阻抗谱，研究了亚硝酸钠对低碳钢缝隙腐蚀的影响。

In this process, the discharge process of single point to point contact is transformed to the process of both point to point contact and the overall surrounding contact of sphere Ni through the self redox reaction, thus making a highly efficient electron transfer process. In this dissertation, the catalytic electrolysis mechanism is discussed. The influence of various parameters (e.g. kind and concentration of catalyst, reaction temperature and electrolysis duration) on electrolysis were investigated.

本文首次提出了以KMnO_4为代表的高锰酸盐作为电解过程电子传递的媒介，通过锰盐自身氧化还原反应的参与，在阳极和溶液中的球形Ni_2之间建立起高效的电子转移过程，使球形Ni_2和阳极之间单一的固体之间的点点接触放电，转变为点点接触放电和球镍与溶液全方位包围接触放电过程，大大提高了电解过程的效率。

In order to improve their water solubility, 4"-fatty amido-3"-sodium carboxylate azobenzene-4-sodium sulfonates were synthesized. They are azo compounds with two hydrophilic groups of carboxyl and sulfonyl. They decrease the surface tension in dilute solution slowly, and show some surfactivity, but are not surfactants. The probable reason is their relative strong hydrophile. Furthermore, their colors are not fresh and far from our destination.

为了改善其水溶性，改用对氨基苯甲酸为原料合成了4′-脂肪酰氨基-3′-羧酸钠偶氮苯-4-磺酸钠盐，以偶氮结构为主的亲水基团上连有羧酸基和磺酸基两个亲水性较强的基团，但可能由于其亲水性太强，在稀溶液中只能缓慢地降低溶液的表面张力，具有一定的表面活性，但不是表面活性剂，而且颜色不鲜艳，距离我们的目标较远。

The Zeta potential and the surface charge density of the membrane were calculated according to Helmoltz-Schmolukovski and Gouy-Chapmann equations.

摘 要：研究芳香聚酰胺纳滤膜在不同电解质溶液中的流动电位，考察膜两侧压差、电解质浓度、离子价态及溶液pH值对流动电位的影响，用Helmoltz-Schmolukovski方程与Gouy-Chapmann方程计算膜表面的Zeta电位与电荷密度。

So find out which arouse sweetening solution foam reason is one of the problems that natural gas sweetening in the present stage.

因此找到引起脱硫溶液发泡的原因，并以一定的处理手段降低这些物质在脱硫溶液中的含量，是天然气脱硫工艺急需解决的问题之一。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。