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We extend the second order elastic tensor of Husdon's and turn it to a matrix which makes the calculation of second order perturbation much more concise. Then the azimuthally phase and group velocity formulas of plane wave propagation in horizontal plane are deduced according to Christoffel equation, and the azimuthally dependent velocities in dry and water saturated cracked medium are calculated.

而后，根据Christoffel方程推导了由各向同性背景介质中含两组非正交的垂直裂隙而形成的等效单斜各向异性介质中，在水平面内随方位变化的相速度和群速度的计算公式，并对干裂隙和饱和流体填充裂隙介质两种具体情况进行了计算。

Kinds of Schiff base derivatives of 2-N-benzylidene Furanmethanamine have been designed. The Net Charges of main atoms, bond lengths, bond angles, dihedral angles, IR have been calculated by means of HyperChem6. 0 program. 36 kinds of Schiff base derivatives of benzylidene adenine have been designed. Also the net charges of main atoms, bond lengths, bond angles, dihedral angles, IR, the energy gap △E between HOMO and LUMO and the nonlinear second-order polarizability β have been calculated by means of HyperChem6. 0 program. The calculated results indicated that the nonlinear second-order polarizability β were up in accordance with the △E down.

设计了腺嘌呤缩苯甲醛36种衍生物，计算了这些分子的气相几何，腺嘌呤缩苯甲醛中各原子的电荷分布，最高占有轨道HOMO和最低未占有轨道LUMO的能量以及它们之间的能量差△E，同时还计算了这些分子的二阶非线性极化率β，我们发现腺嘌呤缩苯甲醛的二阶非线性光学系数与△E有近似一致的变化关系，随着△E的减小，二阶非线性光学系数有增大的趋势。

Vizquel singled to center, Sweeney bunted him to second against Myers for the second out.

接下来的Vizquel击出了中外野方向的一垒安打，Sweeney在牛棚总经理的投球下以触击将队友给送到了二垒。

Hot vapor from this unit passes to the second-effect calandria and causes boiling in the second evaporator.

从这台设备中出来的热蒸汽通进二效的列管换热器，使第二台蒸发器中的液体沸腾。

Students have grasped this kind of model in the primary stage, while apply it in practice they still repeat the theme of the former sentence, which means that Vietnamese students are not skillful at the discourse cohesion; in the middle stage, there are passive sentences and "catenulate"sentences, but some of the students bring on grammatical errors while assuring the cohesiveness of discourse; in the advanced stage, the second cohesive model disappears while amount of third cohesive way appears which even more than the second one, which shows that students no longer stand on the cohesiveness formally but to make the "zero"cohesive of discourse.

另外我们还在语料中发现了被动句的语体风格出现偏差的情况。在运用被动句的语篇衔接功能时，留学生普遍运用第一种主位推进模式。在初级阶段学生就已经基本掌握了这种模式，但有时会不必要地重复前句的主位，这说明留学生对汉语的语篇衔接还不够娴熟；有的学生不能够使用被动句完成语篇衔接，可能是受词汇量的影响。

Second, there is the beginning of the year, I traveled with a team of Hong Kong people guozhuang, when the鹅黄Chimonanthus bloom, the second day and very few tourists, everyone says that is too beautiful scenery, this scene is still fresh.

有一年年初二，我带一队香港人游郭庄，正值鹅黄的腊梅盛开，年初二游客又非常少，大家都说景色太漂亮了，这一场景至今记忆犹新。

Moreover the clock chip has the year, the month, Japan, divides, the second time function and designated when as well as the week demonstration function, chronometric data's renewal each second carries on automatically under the computer C language's actuation one time, but does not need the procedure to intervene its output state.

另外时钟芯片具备年、月、日、时、分、秒计时功能和多点定时以及星期的显示功能，计时数据的更新在计算机C语言的驱动下每秒自动进行一次，但不需程序干预其输出状态。

A first embodiment comprises a first common primer sequence, a first template homology region, a cleavable site, a second common primer sequence and a second template homology region.

第一个实施方案包含第一通用引物序列、第一模板同源性区、可切割位点、第二通用引物序列和第二模板同源性区。

An allocation optical fiber sensor comprises signal treatment circuit, sensor optical cable, supernarrow wide laser, two detectors, three offsets, four couplers, four wave-length division multiplex, superradiation LED, polarizer and phase adapter, Sagna conoscope and Mach conoscope shares No1 sensitive optical fiber LB with the third wavelength division multiplex through the first wavelength division multiplex, the second wavelength division multiplex shared with the fourth wavelength division multiplex the second sensitive optical fiber to form the hybrid conoscope.

本发明公开了一种分布式光纤振动传感器，由信号处理电路、传感光缆、超窄线宽激光器、两个探测器、三个消偏器、四个耦合器、四个波分复用器、超辐射发光二极管、起偏器和相位调制器组成；在本发明中构成的萨格奈克干涉仪和马赫-泽德干涉仪，通过第一波分复用器与第三波分复用器共用第一敏感光纤L B ，第二波分复用器与第四波分复用器共用第二敏感光纤L C 形成了混合干涉仪。

The second part is composed of the second and the third chapters, making a dotted line type historical observation of the western and Chinese ancient, modern and cotemporary ideas of the university.

第二部分为第二、三两章，主要分别对西方和中国的古代、近代、现代大学理念进行了点线式的历史考察。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。