三体的

In order to solve the backward electron transfer problem, 9 kinds of rhenium bipyridyl photosensitive dyes with different electron donating groups on the p or m-position of the pyridine rings, 2 kinds of rhenium bipyridyl and 2 kinds of ruthenium tris-bipyridyl photosensitive dyes with two tyrosine ethyl ester groups on the bipyridyl rings were designed and synthesized.

本文针对该类太阳能电池中存在的电子回传问题，设计合成了在吡啶配体的间位和对位带有不同供电基团的9种铼联吡啶光敏染料，在联吡啶配体上带有两个酪氨酸基团的2种铼联吡啶和2种钌三联吡啶光敏染料。

There are three isomeric pentene(C5H10)that yield 2-methylbutane on catalytic hydrogenation. Write structural formulas for these three isomers and indicate their relative stabilities based on the ΔH values

答：戊烯的三种同分异构体在催化加氢后可生成2-甲基丁烷，写出3个同分异构体的结构式，并依据他们的ΔH值判断出它们的相对稳定性

Under the three body abrasive wear, the cutting is main reason of wear of the hard materials (3M and 2M). It is an important wear form of material 4M and several austenitic manganese steel at high load condition. b. The plastic materials form the block debris after deforming many times, forming the block-shape debris is the major waar form of this kind of material under several given wear conditions.

在三体磨粒磨损条件下，切削是造成编号为2M和3M等硬质材料磨损的主要原因，也是4M和几种奥氏体锰钢在高载荷下磨损的重要形式；块状屑的形成是塑性较好的材料在各种磨损条件下磨损的主要形式。

A finite element iteration method of safety factor against sliding of the abutment is presented to study the stability of Shuanghe arch dam abutment ,and the safety factor against sliding of the abutment is obtained.

采用坝肩抗滑稳定安全系数的有限元迭代法，通过三维有限元计算，研究了双河拱坝坝肩岩体的稳定性，得到坝肩岩体的抗剪安全系数，在此基础上，进一步分析加固后的坝肩稳定性。

D net work numerical modeling technique for discontinuities of rock mass is a new technique developed recently, which can be a very important basic work to evaluate the stability and geometric parameters for engineering design in jointed rock mass.

岩体随机不连续面三维网络数值模拟技术是近年来逐步发展起来的一项新技术，该技术对坚硬块状节理化岩体的稳定性评价，及岩土工程设计几何参数的获取是一项重要的基础工作。

The piezoelectric activities of the porous PTFE electrets mainly depended on the charge storage ability of the electrets themselves.

研究结果指出：(1)常温下，多孔PTFE驻极体的准静态压电系数d33随充电时间的延长而增加，并呈现出线性区、非线性区和饱和区三个区间，多孔PTFE驻极体的压电活性主要依赖于这类材料的电荷储存能力。

In this paper,a definition of disaster chain is given from three angles,that is function,structure and essence,and the concept of disaster link and the object to cause disaster,moving or static impacted hazard object are suggested.

本文从功能、结构和本质三个角度给出了灾害链的定义，提出了灾害环、致灾体和可能受灾体的概念，对现实中的大气灾害链进行了分类；分析了它们的共性与个性。

Also,the optimization of outer hulls location of the trimaran for minimizing wavemaking resistance was considered.

此外还考虑了三体船型的水下片体的位置的优化问题，得到了一些有意义的结论。

Two coordinate conversion matrices respectively for rotation angles in two rotators express the same conversion,they are thus equal,and by contrasting them the relationship between these two kinds of rotation...

分别用两个三自由度转动体的转角所表示的两个直角坐标系之间的空间旋转坐标变换矩阵，代表同一变换，因而相等，由两个矩阵的对应元素相等可直接得出两个转动体之间的转角关系式。

Objective To establish three dimensional finite element model libraries of telescopic dentures and removable partial denture by means of model libraries, and compare the characteristics of stress distribution among three prostheses.

目的 通过模块化方式建立套筒冠及可摘局部义齿的三维有限元模型，比较三种修复体的应力分布特点。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。