链体

Furthermore, the selective reductions of 2,2'-dinitrobiphenyl have been detailedstudied in the synthesis of achiral biphenyl backbones.

运用不对称活化的策略，成功地在Cu催化Et_2Zn对链烯酮的1，4-共轭加成反应中获得了高对映体选择性的加成产物。

The RMS deviations of bond length and angle of these mutants are 0.0011nm and 2.457, 0.0013nm and 2.675° respectively.

在这两个突变体的结构中均未见到Glu189侧链方向的改变。

The article was recounted capability and appliance of long chain branched high melt strength polypropylene in details, and it was also summarized the performance and so on of long chain branched high melt strength polypropylene.

文章对长链支化高熔体强度聚丙烯的研究及应用作了比较详尽的叙述，并对其性能方法进行了综述。

Recently, a small RIP named as cinphorin was isolated from the seed of camphor tree.

最近，从香樟种子中还分离到另一种微型双链核糖体失活蛋白，命名为新丰毒蛋白。

The effect of crystallization process from polymers, control laws of particles from the long-chain structure of polymer, as well as the self-assembly regulatory mechanism of nano-particles from polymer are investigated , through the control of its morphology and properties of precursor order to get large aperture, high specific surface area, has good thermal stability and catalytic cerium oxide particles.

研究聚合物对结晶过程的影响、聚合物的长链结构对粒子自组装的控制规律以及聚合物对纳米粒子自组装的调控机理，通过控制其前驱体的形貌和性能，以期得到大孔径、高比表面积、具有良好的热稳定性及催化作用的氧化铈颗粒。

In this thesis,the fabrics used in reinforced composites have had a significant improvement in weave technology,they can bind seven layers reinforcement yarns into fabrics with warp yarns which move by chain stitch or tricot stitch,and the direction of any layer yarns can be changeable.

在本课题中，作为复合材料增强体的织物，在编织工艺上已经有了很大的改进，它是可以一次将七层增强纤维纱线平行并列通过做编链或经平运动的经纱束缚在一起而形成的一织物，并且各层中纱线的取向可以任意调节。

This dissertation divides into seven chapters and the main contents and conclusions are listed as following:1. Three series binuclear lanthanide carboxylate coordination polymers 1～7 have been synthesized under hydrothermal conditions by altering the length of carbon chains between carboxyl group and phenyl ring on ligands, which are isophthalic acid, 1,3-phenylenediacetic acid and 1,3-phenoxydiacetic acid, and lanthanide ions such as Pr~(3+), Eu~(3+)and Ho~(3+).

论文共分七章，主要研究内容和结论如下：1、通过改变间苯二甲酸配体的羧基和苯环之间的碳链长度，从间苯二甲酸、间苯二乙酸到间苯二氧乙酸，以及改变稀土离子半径Pr~(3+、Eu~(3+)和Ho~(3+)出发，在水热条件下制备了三个系列双核金属单元的稀土羧酸二维配位聚合物1～7。

In the synthetic procedure to chiral docetaxel C13 side chain, the expensive cinchona alkaloid derivatives can be recycled, which dramatically decreased the reaction cost.

在多烯紫杉醇手性C13侧链的合成过程中，对价格昂贵的金鸡纳生物碱衍生物配体进行了回收和再利用，大大降低了反应成本。

The system is a circulatory system and made up of t...

并讨论了实现该体系的两种关键技术—多智能体技术和数据仓库技术的具体应用，构建了供应链成本信息集成系统。

The new method of solving the hydraulic fracture moveable boundary problem by use of the method of the conformal transformation and body-fitted coordinate is put forward; according to the law of continuation, the transformation from the control equation in the physical plane to the calculation plane is completed, and two dimensional fluid field numerical simulation in the fracture is also finished.

提出了利用保角变换和贴体坐标变换处理水力裂缝动态边界问题的新方法，根据链导法则完成了物理域控制方程向计算域平面的转换，实现了二维流场的数值模拟； 5。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。