阳离子的

It was observed in this pressure range that sodalite underwent a phase transition at about 3 GPa and that the d- 222 value showed an abnormal increase when the pressure was higher than 6.3 GPa. The experimental results are explained on the basis of the pressure effects upon the cage and tunnel structures in sodalite.

对方钠石在高压下相变以及d222增大的原因进行了分析，认为方钠石结构中存在着充填大阳离子的多面体笼和孔道，高压下这些笼和孔道容易扭曲变形，从而造成结构的改变。

As a carrier of plasmid DNA, dextran-spermine cationic polysaccharide was prepared by means of reductive-amination between oxidized dextran and the natural oligoamine, spermine.

作为质粒DNA的载体，阳离子的精胺多聚糖通过氧化右旋糖苷，精胺等之间的脱氨基化作用作用来制备。

As a carrier of plasmid DNA, dextran-spermine cationic polysaccharide was prepared by means of reductie-amination between oxidized dextran and the natural oligoamine, spermine.

作为质粒DNA的载体，阳离子的精胺多聚糖通过氧化右旋糖苷，精胺等之间的脱氨基化作用作用来制备。

Low molecular organic acids are commonly present and become an important factor in affecting transformation and transfer of heavy metals in environment.

低分子有机酸普遍存在于自然环境中，其与重金属阳离子的螯合作用是环境中重金属迁移转化的重要影响因素。

These results suggested that theoverexpression ofA VPI increased sequestration of Na~(-1) into vacuole and uptake capacity of other cations in the transgenic alfalfa.

这些结果说明AVP1的超表达促进了转基因紫花苜蓿细胞中Na~+向液泡中的区域化，并增强了细胞对其它阳离子的吸收能力。

The self-assembled supramolecular nanostmctures of a bolaamphiphilic diacid, 1, 20-octadecanedicarboxylic acid, on the subphase containing various metal ions have been investigated.

研究了ODA在含有Ag〓，Zn〓，Cd〓和Eu〓等金属阳离子的亚相水溶液表面上的铺展行为。

The intercalation of the HDTMA cation increased the interlamellar distances from 13.2A (Na-bentonite) to 17.9A (HDTMA-bentonite).

HDTMA 阳离子的置闰增加了从 13.2A到 17.9A 的瓣间的距离。

In contrast to S- and O-heterocyclic compounds, increasing ionic strength reduced the sorption of ionizable N-heterocyclic compounds (pyridine, 2-methylpyridine, quinoline, 2-methylquinoline, and isoquinoline), due to increased electrostatic competition by cations.

对比硫和氧类杂环物质，提高离子强度会减少杂环化合物的吸收（吡啶、2甲基吡啶、喹啉、2甲基喹啉和异喹啉）这主要是由于阳离子的静电竞争。

The quantum mechanical calculation results suggested that the energetics of stereochemical control during the tricyclic Markovnikov cation deprotonation step could be affected by the inclusion of these enzymatic effects.

而量子力学的计算结果显示出酵素催化反应里所产生的种种效应都对在三环马可尼可夫碳阳离子的去质子化步骤中立体化学特性有重大影响。

In Chapter 5, we synthesized polyampholytic complex hydrogel by using carboxymethyl cellulose and chitosan as feedstocks.

第五章中，我们利用带阴离子的羧甲基纤维素和带阳离子的脱乙酰壳聚糖为原材料，通过复合反应得到了两性聚电解质复合物凝胶。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐