射出角

In this paper, the research on vignetting is done and a formula for vignetting about field angle、entrance window, entrance pupil and the distance between them is deduced.

文中对渐晕做了一些研究，并推导出一个渐晕关于视场角、入瞳、入射窗以及两者之间距离的解析式。

Wave equations, which were derivate from the stiffness Matrix of anisotropy monocline symmetry system, may meet different azimuth modeling of 2-D finite difference.

从各向异性单斜对称系统的刚性矩阵推导出的波动方程，可以满足EDA介质模型不同方位角入射的二维差分模拟要求。

By employing the conformal mapping method, the response function of the lead glass was obtained, and the influence of the boundary on the response function is discussed. Then we obtained the trajectory for the off-center soliton and the output displacement equation when the point of incidence is varied.

理论上，利用保角变换的方法，求出了材料的响应函数，讨论了边界对响应函数的影响，得到了偏离中心入射时孤子中心传输的轨迹方程。

By employing the conformal mapping method, the response function of the lead glass was obtained, and discussed the influence of the boundary on the response function. Then we obtained the trajectory for the off-center soliton and the output displacement equation when the point of incidence is varied.

理论上，利用保角变换的方法，求出了材料的响应函数，讨论了边界对响应函数的影响，得到了偏离中心入射时孤子中心传输的轨迹方程。

The relation between the ultrasonic frequency f and the wavelength λ0 was deduced. The relations between the diffraction angle θd,the acoustic polar angle θa and the incident angle θi were calculated.

推导出超声波频率f和光波波长λ0的调谐关系；计算出滤波器的光谱分辨率R和集光能力δθi；光入射角θi与衍射角θd、声入射角θa之间的关系。

Or heat-pipe evacuated collector tubes with a flat absorber and a semicylindric absorber , relative solar irradiance changing with incident angles on various points of absorber s have been measured respectively by using a solar simulator.

以太阳模拟器为光源，对平面吸热板和半圆柱吸热板热管式真空集热管测定了玻璃罩管内吸热板表面各点随光线入射角变化的相对太阳辐照强度分布，给出了平面与半圆柱吸热板平均相对太阳辐照强度随人射角变化的规律及三维拟合公式，并对两种情况的实验结果进行了初步分析。

In view of the short duration in the test of a fuze's self-destruction time,we discussed the possible factors such as fuze structure and processing quality,the angle of fire,weather and barrel conditions.Meanwhile,we used the method of variance analysis to process significance test for different barrel conditions on the malfunctioning of fuze self-destruction.After eliminating some other possibilities,we retrieved the fired shell which has abnormal band with fin,and finally found the real cause of the problem mentioned above.

由一带离心自毁机构引信自毁时间出现偏短的试验结果出发，从引信结构参数和加工质量、射角、气象条件、身管状态等方面入手，着重用方差分析法对身管状态进行显著性检验，探讨引起引信自毁时间异常的因素，在逐一排除了其他因素后，通过射击回收的方法发现弹带有异常飞边，找出了问题的原因。

The direction of the outgoing laser beam from this device can be changed arbitrarily by turning the two planes through two motors within a certain range,which depends on the wedge angle and the refractive index of the plane material.

该装置结构简单，主要由两个楔形光学平板组成，通过电机转动两个楔板可使出射光束方向在一定范围内任意改变，该调节范围由楔板的楔角和折射率决定。

The following parameters have been obtained:angular size(along the direction of the motion of the moon's center on the Sun's disk),flux density,average brightness temperature and height of the S-component sources associated with sunspots,plages and coronal condensations during the eclips.

给出日食期间日面上黑子、谱班和日冕凝聚区相应的缓变射电源的几个参数：角径、流量密度、平均亮温度与高度。

In order to save the rare iceland and increase the transmittance of polarizing prism,a type of polarizing prism combination of iceland and glass is designed. The prism have super high transmittance of o light when the incident angle is Brewster's angle.

为了节省稀有昂贵的冰洲石晶体材料，尽量提高偏光棱镜的透射率，提出了一种采用冰洲石晶体与光学玻璃组合的方法，给出了以布儒斯特角入射来提高o光透射率的偏光棱镜设计。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。