查询词典 ion-pair

Making an oral compos IT ion about a certain topic for one minute the first time and record the compos IT ion on tape at the same time.

找好一个题目作一分钟的口语作文，同时将其录音。

Then listen to the compos IT ion and find out the room for improvement. Then make the same compos IT ion for two minutes for the second time and also record IT .

听录音，找出不足和错误，就此题目再作两分钟的的口语作文，同样录音，再听并找出不足与进步，继续作三分钟口语作文。

These results prove that iron ion or 4s conduction electron can produce new square atom loop 4L, magnetic moment of iron ion can be made by magnetic moment 2P(subscript m0k) of 2 4sEE in 4L loop, Curie temperature T is proportionate to quantized energy of 4sEE, HMCE can produce contrarotation or reverse self-rotation energy U(subscript 0K) and U(subscript 0K) can produce great thermoelecal potential.

这些结果证明铁离子或4s传导电子产生了新的正方形原子轨道4L，2个4sEE在4L轨道上产生的磁矩2P(下标 m0K)构成铁离子的磁矩，居里温度T与4sEE的量子化能量成比例，基金属传导电子产生了反向旋转或反向自旋能量U(下标 0K)，U(下标 0K)使合金产生大的热电势等反常物理量。

The foundation is ion channel activation on cell membrane and ion transmembrane movement, however, whether Ca2+-activated K+ channel involves in epilepsy induced by Coriaria Lactone is still unclear.

目的：以大鼠海马锥体神经元为靶细胞，了解马桑内酯在其致痫机制中对神经元钙激活钾通道的作用。设计：非随机对照实验。

METHODS: The BEC were preincubated with crocetin (1, 0.1 and 0.01 μmol/L) for 12 h, then exposed to AGE (100 mg/L). The RAGE mRNA expression was detected by RT-PCR analysis, the intercellular adhesion molecule-1(ICAM-1) was measured by ELISA. The extracellular superoxide ion and thiobarbituric acid reactive substances were assessed with superoxide ion kit and colorimetric assay, respectively The intracellular I2O2 was also detected using the probe 2,7-dichlorofluorescein. The mitochondrial membrane potential and mitochondrial Succinate dehydrogenase were analyzed by the retention of rhodamine 123 (Rh123) and MTT.

不同浓度的西红花酸(1、0.1、0.01μmol/L)预孵BEC细胞12h后，用AGE(100mg/L)刺激细胞12h，RT-PCR法测定RAGEmRNA的表达水平；ELISA法测定细胞间黏附分子－(ICAM-1)的表达；试剂盒分别检测胞外超氧阴离子和硫代巴比妥酸反应产物浓度；同时，还用2，7-二氯荧光素测定了胞内H2O2的浓度，并用罗丹明123(Rh123)荧光法及MTT法分别检测细胞线粒体膜电位水平和其琥珀酸脱氢酶的活性。

The azacrown ether complexes are formed by coordination of azacrown ether and metal ion, the azacrown ether is 1,12-diaza-3,4,9,10-dibenzo-5,8-diazacyclopentadecane-N,N'-diacetic acid, the metal ion can be any one of Cu2 , Ni2 , Co2 or Zn2 and so on.

所述氮杂冠醚配合物为氮杂冠醚与金属离子配位而成，氮杂冠醚为1，12-二氮杂-3，4，9，10-二苯并-5，8-二氮杂环十五烷-N，N'-二乙酸，所述金属离子可以为Cu 2 、Ni 2 、Co 2 或Zn 2 等中任一种。

For the question of distribution and acceleration of ionospheric ions O+,H+ and He+ in the magnetosphere, the ions static distribution function is found by solving the dynamic equation, and the up-flowing ion static distributions with various Kp indexes are investigated. The ions distribution function during the geo-magnetic dipolarization is simulated, and the upflowing ion acceleration in the magnetotail is investigated.

针对磁层中电离层离子O+、H+和He+分布与加速问题，采用动力论方程求解了离子定态分布函数，研究了不同Kp指数条件下上行离子的定态分布；模拟了磁场偶极化过程中离子分布函数随时间的变化，研究了上行离子在磁尾的加速。

Because of the low pH and dissociality of hydrofluoric acid, people often ignore the severity of symptoms after contact it. However, the hydrogen ion and free fluoride ion exist persistently.

摘要氢氟酸是目前工业界常见的强酸性溶剂，但是因为在强酸类中是属於较低酸性及低解离度，故对身体立即性之损伤较少，延迟产生之损伤合并症较多，因此异常接触后易使人轻忽其伤害之严重性。

The physical and chemical sputtering on the surfaces of limiter and diverter plate is important source of impurities. The former depends on the ion flux and the energy of ion. The latter depends on the temperature of surface.

在孔栏和偏滤器靶板表面上易产生的离子通量的电荷态和能量通过物理贱射是确定杂质释放大小的最重要因素，而化学贱射是取决于表面形成的元素、碰撞的等离子体和表面温度。

The results of in situ DRIFTS on propylene oxidation show that the allyl species originated from α-H abstraction of propylene were located at the wavenumbers of 1454 cm~(-1) and 1427 cm~(-1). The rate-determining step is the abstraction of an α-H abstraction from a lattice oxygen linked to a bismuth ion to form a π-allyl intermediate coordinated to a molybdenum ion. The metal-oxo group then attacks the allyl intermediate forming a σ-bonded oxygen-allyl species, which is in a rapid equilibrium with the π- bonded species. The σ-bonded species then transforms to acrolein by further abstraction of α-H. Such species as formate, carboxylate, carbonate transform to deep oxidation products. The acetone was derived from propylene by an enolic species at lower temperatures.

丙烯氧化反应体系的原位漫反射红外光谱研究结果表明，由丙烯脱氢生成的烯丙基中间物种吸收峰在1454cm~(-1)和1427cm~(-1)处；基于此提出了较完整的丙烯氧化反应网络：丙烯选择氧化生成丙烯醛主要经历丙烯脱除甲基上的一个H，生成烯丙基物种，该物种嵌氧生成σ-O络合物，脱氢得到丙烯醛前驱体，脱附生成丙烯醛；完全氧化产物是由催化剂表面上生成甲酸盐、羧酸盐、碳酸盐等形式的中间物种转化而成；较低反应温度下丙烯氧化生成丙酮，通过烯醇式中间物种氧化生成丙酮前驱体得到。

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