阳离子的

Oil-soluble Ag2S nanoparticles surface-modified by dialkyldithiophosphate were prepared by chemical synthesis.The synthesized Ag2S nanoparticles were characterized by transmission electron microscopy,X-ray powder diffraction spectroscope and UV-vis spectrophotometer.The friction and wear tests were carried out by a DF-PM dynamic and static friction tester.

在水醇混合介质中，采用同阳离子共沉淀法合成了有机化合物表面修饰的Ag2S纳米微粒，在高速钢基底上制备成膜，研究了它的摩擦学特性。

The characteristics of raw and modified absorbents were studied, and their ability to remove dyes from cationic, acidic, reactive dye solutions and textile wastewater were compared.

研究了改性前后三种吸附剂材料的性能变化，比较了它们对阳离子、酸性、活性染料溶液及印染污水的处理效果。

The synthetic condition s of benzaldehyde and glycol acetals by 732#strong acidic ion exchange resin are studied.

研究了苯甲醛与乙二醇在732#强酸性阳离子交换树脂催化下的合成条件，得到了缩醛化反应的最佳合成条件：醛/醇摩尔比为1∶1。

Meanwhile, anions and cations had also some effects on anti- wear properties.

阴、阳离子对抗磨剂的抗磨性能亦有一定的影响。

They are absorbed from a portion of the intestinal tract other than that utilized for the absorption of cations.

他们在一部分的肠道中被吸收，以外的用於吸收阳离子。

They are absorbed from a portion of the intestinal tract other than that utilized for the absorption of cations.

他们在一部分的肠道中被吸收，以外的用于吸收阳离子。

Being different from the case of HZSM-5, the species on NaZSM-5 can not be further activated because they are decomposed to acetylene and desorbed with increasing temperature.

在NaZSM-5上，乙炔只通过与Na^＋位上的水作用形成乙烯醇，后者与沸石孔道中的阳离子以静电结合构成弱吸附物种。

The technology of separation and purification of the interesting protein was studied, centrifuge the sample and get the clear supernatant, remove protein by 50％ ethanol, concentrate by drying with freezing way, remove salt and pigment by dialysing, separation with G-50 and CM-cellulose52 column, concentrate by PEG6000, The purified sample was a single band after separation by SDS-PAGE.

研究了目的阿片肽的分离纯化工艺。发酵混合物经过离心取上清，乙醇沉淀去蛋白，冷冻干燥浓缩，透析除盐脱色，聚乙二醇6000反渗透浓缩，G-50柱分离，CM-cellulose52阳离子交换层析，聚乙二醇6000浓缩等步骤后得到了较纯的目的产物，目的产物在SDS-PAGE上呈现单一条带。

The polymerization of conjugated dienes on a cationic exchange resin was investigated.

在一连续的固定床反应器中，采用强酸性阳离子交换树脂催化剂，研究了共轭二烯烃在醚化条件下的反应行为。

Contrarily, cationic surfactant CTAB and nonionic surfactant_9 have the same effects: the two substances\' enterings cause the superficial enzymatic activity to decrease rather than the total loss in whatever the buffers. There is no Soret movements except that a longer wavelength movement by_9\'s treatment under pH5.2 buffer condition.

阳离子表活剂CTAB和非离子型表活剂9的作用结果类似：无论SBP带何种净电荷，两类物质的加入使得表观酶活力降低但不是完全失去：紫外-可见电子吸收光谱上特征Soret带位移保持不变；只是9在pH5.2缓冲液中Soret带发生红移。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。