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According to dispersion relations, The relations of the incident angle, reflection angle and refraction angle equations with bicrystal parameters and wave vector are obtained respectively. The variation of the reflection angle and refraction angle with the incident angle for certain bicrystal parameters is presented by angle quations.

根据晶体的色散关系解出了入射角、反射角和折射角关于晶体参量及波矢的方程，并根据角度方程给出了在一定参量下反射角和折射角关于入射角变化的关系图，以图示的方法显示了光束在界面处的异常性质。

But if thou wouldst know when any one that is absent will return., behold the Lord of the Ascendent; and if you finde him in any one of the four Angles , he will return in that year ; and if he be not in an Angle, then fee how far he is distant from the first Angle ; for so long he will stay, and so many years as there be Houses.

但是如果你想知道一个出外的人何时回来，要看上升星座的主星；如果这颗星在四轴任何一个点上，他最终会回来

In this thesis, we apply the equations of motion of steady Mach reflections and the oblique shock theory to derive polynomial expressions of the forms of f(r,Mo,P1) of downstream sonic and strong/weak separating conditions of reflected shocks of perfect-gas steady Mach reflections. We then obtain polynomial expressions of the forms of f(r,M0) for the limiting Mach angle condition of the above two expressions.

本论文首先应用稳态马赫反射流场运动方程式及斜震波关系式，推导出理想气体稳态马赫反射流场之反射震波下游之音速条件与反射震波之强弱分界条件之曲线解公式，并应用该曲线解公式来推导反射震波俱音速性质於Mach angle条件及反射震波俱强弱分界性质於Mach angle条件之公式。

A FDTD program was written and the electromagnetic fields for various polarized incident beams are calculated and the polarization states of the diffractive waves are extracted. The relation between the polarization state of the diffraction wave and the grating balzed angle and polarization angle for the linearly polarized incident wave is analyzed; In the spectral range of 1530 ~ 1570nm, the polarization dispersion is studied for the linearly and circularly polarized incident beam.

用时域有限差分程序计算出任意偏振方向线偏光经过闪耀光栅衍射后的电磁场分布，提取衍射波的S偏振和P偏振分量，分析它们与光栅闪耀角和入射光波偏振角的关系；分析在1530 -1570nm光谱范围内，入射光波为线偏振波和园偏振波时，衍射光波的偏振色散特性与光栅闪耀角的关系。

From environmental protection angle for, natural gas is a kind of a lot of respects; of fuel of excel petrolic cleanness from economic angle for, 1 stere compresses the price of natural gas to be 1.7 yuan about, price of 1 litre of petrolic is 4.1 yuan about

从环保角度来说，天然气是一种很多方面都优于汽油的清洁燃料；从经济角度来说，1立方米压缩天然气的价格约为1.7元，1升汽油的价格约为4.10元

The Go moved backward with 1.35mm and upward with 1.90mm in group I, the gonial angle increased for 3.69°, and angle between palatal plane and mandibular plane was increased for 5.00°; In group II, the Go moved backward with 1.85mm and upward with 3.32mm , the gonial angle increased for 4.06°, and angle between palatal plane and mandibular plane was increased for 5.22°. Both in group I and II, there was a tread for clockwise rotation of mandibular corpus. The length of pterygomasseteric sling was mild increased due to the backward movement of Go.

在Go点的变动方面，在Me点向前位移的族群里，术后Go点平均向后1.35mm，向上1.90mm， gonial angle 平均增大3.69度，腭平面与下颚平面的夹角则是增加5.00度；在Me点向后位移的族群里，术后Go点平均向后1.85mm，向上3.32mm， gonial angle 平均增大4.06度，腭平面与下颚平面的夹角则是增加5.22度，不论是向前或是向后的族群，结果皆显示翼咀嚼肌悬吊带有轻微被拉长的迹象。

The anteroposterior projectionof the foot, utilized to examine the foot disease in the past was referred as to the freely-stressed method. However, most of the patients on suspicion of Hallux Valgus get pains while standing with weight-bearing. Additionally, the patients' real conditions can not be diagnosed without standing. it is helpful for us to apply both the foot weight-bearing and the foot non weight-bearing so as to probe the individual difference between the HVA and the IMA 1(superscript * intermetatarsal angle and further to provide the informative resources concerning the assessment of performing surgery operation. The study include 40 patients who we having Hallux Valgus of different degree, The findings have revealed the significant difference among 40 patients after the method-weight-bearing AP of the foot projection given.

过去一般常用诊断足部疾病的足部摄影(anteroposterior projection of the foot； AP projection of the foot)是指未施加压於病人足部的拍摄方法，然而多大脚趾外翻的病患常於站负重时感觉疼痛舒服，而未负重摄影却无法呈现出病人站时的真实态，因此我们用足部前后位负重摄影(weight-bearing AP projection of the foot)与足部未负重摄影(non weight-bearing AP projection of the foot)的影像比较其大脚趾外翻角(Hallux valgus angle， HVA)及第一跖骨间的角1(上标 st intermetatarsal angle， IMA的差，进而提供外科手术的估评。

The mean preoperative kyphotic angle for the 11 individuals with the thoracic or thoracolumbar burst fractures was 24.6° and the mean preoperative lordotic angle for the 3 individuals with lumbar burst fractures was 10.6°.

平均出血596.4 mL。关于术后并发症，出现一过性神经损伤加重病人1例，假关节形成1例。

The energy exchange analysis indicates that gliding energy efficiency is dependant on the lift drag ratio of the wings and gliding angle of the hull. Through the calculation in this thesis, it can be concluded that enhancing the lift drag ratio can largely improve the energy efficiency when the gliding angle is in the range of 10to 40 degree, and when lift drag ratio is fixed, there exists a special gliding angle for the maximum of the efficiency, which provide theoretical basis for the design of operating parameters.

通过能量转换分析，得出滑翔机航行效率由机翼升阻比和机身航行角决定，航行角在10~40度范围内，增大机翼升阻比可显著提高航行效率；并由计算得出，在升阻比一定的情况下，总存在一个使滑翔机航行效率达到最大的航行角度，为样机工作参数设计提供了理论依据。

Then, aerodynamic parameters in different flight conditions are used to imitate the uncertainty of the system, and the digital simulation of closed-loop system designed is performed. The results show that the system can accomplish asymptotic decoupling of roll angle, sideslip angle and head-on angle for aircraft, and the system is provided with the function for restraining uncertainty in the system. This illustrates that the flight control system designed has not only good decoupling characteristic, but also better robustness.

然后用不同飞行条件下的空气动力参数变化来模拟系统的不确定性，并进行闭环系统数字仿真，结果表明，所设计的控制律不仅可实现对飞机滚转角、侧滑角、迎角等的渐近解耦控制，而且对系统不确定性具有较强的抑制作用，说明系统具有较好的解耦性和较强的鲁棒性。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。