二金属的

We have taken the advantage of this TICT behavior for the design of new fluoroionophores and synthesized a series of trans-4-(N-arylamino)stilbenes containing a hydrazone substituent, namely 1Hz、2Hz and 3Hz. According to literatures, the hydrazone and methoxyl groups can selectively interact with Cu2+ ion.

欲进一步应用於金属离子感应材料的设计，我们合成了一系列具腙取代基的反式-4-二苯乙烯胺的衍生物1Hz、2Hz、3Hz，因为文献报导腙官能基对铜有极高的选择性。

If the ratio of Cu 2+ to In 3+ is constant, the total concentration of ions showed inappreciable influence on film morphology. The result shows that lauryl sodium sulfate and sodium benzenesulfinate as ideal additives can make the films more flat and smooth.

此外， 在镀液离子低浓度范围内，及Cu/In离子浓度比不变的前提下，镀液中金属离子总浓度的改变不会影响镀层的成分和形貌；十二烷基硫酸钠和苯亚磺酸钠可作为理想的辅助添加剂，能改善薄膜形貌，使其表面均匀、规整。

A conventional lead-acid battery is made up of a series of cells, each of which contains a positive electrode made of lead dioxide and a negative electrode of metallic lead.

传统的铅酸电池是由一系列的小电池组成，每个小电池都有一个由二氧化铅构成的正极和一个由金属铅构成的负极。

Whenpyridine was used as reductive decomposing agent, the expecting cholest-4-en-3,6-dione-22-al was obtained. However, when Zn/HOAc was used to decomposethe ozonide, C-4,5 double bond was further reduced to give cholest-3,6-dione-22-al as main product. 2 For the side-chain construction of compound (1), the solid-liquid phase-transfer Wittig reaction was used. When (3-methyl-2-oxobutyl)-triphenylarsonium bromide was used as reagent, the reaction can be carried out inmild reaction condition and the yield is higher than that when phosphorane wasused.

但使用Zn／HOAc作为分解剂时，却得到其氢化产物胆甾-3， 6-二酮-22-醛；2在甾体支链引入过程中，采用固-液相转移Wittig反应的方法，用(3-甲基)-2-氧丁基三苯基溴化胂作为试剂，反应在非常温和的条件下便可完成，而且产率比传统采用膦烷的方法更高；3在对某些甾酮化合物的选择性还原反应研究时，发现在〓还原体系中，当加入某些金属离子后，反应有更好的区域选择性和立体选择性。

The effects of racemate initial concentration, volume ratio of surfactant to organic solvent, pH value in internal or external phase, pH gradient from external to internal phase, ligand metallicion and system temperature on the performances of chiral separation were discussed.

摘 要：研究在含有Cu2+和N-n-十二烷基-L-脯氨酸手性配体的乳状液膜体系中手性萃取分离氧氟沙星对映体的效果，以及外消旋体的初始浓度、表面活性剂与有机溶剂的体积配比、内外水相pH值、从外水相到内水相pH值梯度变化以及配位金属离子与体系温度对液膜手性分离性能的影响。

Therefore, the heat exchange situation of rear superheater is much badly and temperature exceeding and pipe explosion frequently occur.

经常出现超温爆管的现象，为了能够尽可能避免这种现象的出现，必须要知道后屏过热器管屏的金属壁温和管内工质的状态参数的二维分布。

Such one-dimensional chains interconnect via hydrogen bonding and π-π interaction to form an extended undulated sheet-like structure.

经配体桥联的两个金属离子的距离是6.703〓。这样的一维链通过配体的NH部分〓Cl及溶剂分子甲醇相互之间形成的氢键连接扩展成二维波浪状结构。甲醇分子被包容在层间。

The abdominal incision was raw and tender, but that didn't stop me from fingering it, searching for different notes of discomfort on the xylophone of the 25 metal staples that held me together.

腹部的切口有些疼痛又柔软，但这不会阻止我用手指去抚弄它，在这把我的伤口拉在一起的二十五个金属钉组成的琴上寻找各种不适构成的不同音符。

Laser Solid Forming was an advanced fabrication technology that developed from Rapid Prototyping technique in 1990s and progressed very fast in the recent years. It has a promising future since a density metal component can be rapidly deposited by laser cladding metal materials additively.

激光立体成形技术是于二十世纪九十年代在快速原型技术的基础上发展起来的一项新的先进的制造技术，该技术采用同步送粉激光熔覆方法沿高度方向逐层堆积金属粉材，从而最终获得三维实体零件。

The first impression is war, the second is peace, the antitheses are the bases of studying metal materials, and also the first step of introducing the yin-yang theory into this field.

一是战争——积极，刚的形象，二是和平——消极，阴的形象，这两种极具对立性的形象被视为对金属材料了解的基础，而它们同时也是把阴阳理论体系引入本领域的第一步。

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。