水溶液

Chromophoric dissolved organic matter solutions at different concentrations were prepared to study the effects of CDOM concentration on excitation emission matrix spectrum and synchronous fluorescence spectrum.

用自制的海水有色可溶性有机物干粉配制不同质量浓度的水溶液，研究其对三维荧光光谱和同步荧光光谱的影响。

All tanks used for storage of water or aqueous solutions should be designed and constructed to ensure that they are free draining and cleanable.

所有用于水或水溶液贮藏的贮槽应在设计和建造上确保能够自由排放和清洗。

The results show that the rare earth element Ce can codeposit with cobalt-base alloy, and with increase of mass added of Ce in solution, the content of Co, Ni, Ce in alloy increases and the content of B decreases. Ce can increase plating rate of alloy in some range of content. The rare earth makes deposition potential mve in positive direction and polarizability decrease.

结果表明，在水溶液中稀土元素Ce可以与钴基合金实现共沉积，且随着镀液中Ce的浓度的增大，合金镀层中Ce、Co和Ni的含量逐渐升高，B含量降低；且Ce在一定范围内能够明显提高合金的沉积速度；稀土还使Co-Ni-B合金的析出电位发生了正移，减小了极化度。

ResultsMost coixendide could be extracted by adding 3.5 times of acetone into the dry coix powder for 3 times and extraction for 8hs each time.

结果用3.5倍的丙酮浸提3次，8 h/次，能萃取出薏苡仁中大部分的薏苡仁酯；壁材明胶水溶液的浓度为20%，芯材薏苡仁酯与壁材明胶的质量之比4∶10。

Puertin is representative of isoflavone compounds. To study the mutual reaction between puertin and Cu, Ca, Fe, Zn, Al, and Mg which exist in Pueraria, methods of conductometric titration, spectrophotometry. and pH-potentiometric titration is used.

以葛根素作为异黄酮类化合物的代表，用电导法、分光光度法、pH电位法研究葛根素与葛根中含量较多的微量元素Cu、Ca、Fe、Zn、Al、Mg在水溶液中的配位作用，计算了金属配合物的稳定常数。

A simple, selective and sensitive method was investigated for simultaneous determination of anions (SO2－4, Cl－, NO－3, F－) and cations (Na＋, NH＋4, K+, Mg2＋, Ca2＋) by single-column ion-exclusion-cation-exchange chromatography with conductometric detection. DL-malic acid-methanol-water was used as an eluent.

采用单柱离子色谱系统和电导检测的方法，首次以DL-苹果酸-甲醇水溶液为淋洗液，简便、有效地同时分离、检测了溶液中SO2-4、Cl-、NO-3、F-、Na+、NH+4、K+、Mg2+、Ca2+9种离子。

Thus, surfomers [11, 12], which can directly copolymerize with water-soluble monomers in aqueous solution, are used instead of hydrophobic monomers.

因此， surfomers [ 11 ， 12 ] ，可以直接copolymerize与水溶性单体在水溶液中，使用的不是疏水性单体。

So are description of the relationship between pH and corrosivity of AFFF, ts of the surface as well as the interfacial te

建议修改老化试验及泡沫水溶液腐蚀性的判断标准，用更准确的方法测定泡沫液的表面张力和油水界面张力。

The HPLC system column, mobile phase of CH3CN-3%CH3COOH (11∶89) mixture, with detection wave at 270 nm, was used to determine the content of vitexin in Leaf of Crataegus pinnatifida Bge.

应用反相高效液相色谱法测定了山楂叶总黄酮中牡荆素的含量。C18柱作为色谱柱，乙腈-3%醋酸水溶液(11∶89)为流动相，检测波长270 nm，按外标法定量。

A kind of compound SRBH,which was synthesized from rhodamine B, hydrazine hydrate and salicylaldehyde,and SRBH is non-fluorscent naturally.However,the fluorescent extensity of SRBH was enhanced more than hundredfold when the ion of Crwas added to acid solution, therefore SRBH can be tested for Crin acid solution.

介绍了一种化合物SRBH，由罗丹明B，水合肼和水杨醛合成，该化合物本身为非荧光性的，但是当在酸性环境下加入铬离子后，其荧光强度可以增加上百倍，因此可以用该化合物检测水溶液中的铬离子。

This paper analyzes the compound attractor structure of a new three-dimensional autonomous chaotic system.

分析了一种新的三维自治混沌系统吸引子的复合结构。

ON shut rivals out of their transmission systems and shy away from reinvesting their profits in network improvements.

ON将竞争者挡在了其输送体系之后，并不愿将其收益再投资于网络改建工作。