出射度

In this paper, the effects of the rigid body motions and low frequency surface errors on the image quality were analyzed. Quadratic equations were used to build the mathematical model of the Wolter type I and II X-ray telescopes and reduce the computational complexity of ray tracing. With the help of a self-developed optical surface analysis code, the effects of the perturbations of the mirrors on the image quality was analyzed and the growth of the image spot formed by deformed telescopes was calculated, this is important for giving the reasonable fabrication tolerance.

在本篇文章中，详细分析了刚体运动误差和低频表面误差对成像质量的影响；使用空间解析几何学的二次曲面方程建立Wolter I、II型X射线掠入射望远镜镜片的数学模型，降低光线追踪的计算复杂度；借助自主开发的光学仿真软件分析了国内研制的X射线成像望远镜的刚体运动误差和低频表面误差对成像质量的影响，计算出像点艾里斑半径均方根值随误差变化的增长率，对工程上提出合理的制造公差的误差容限有重要的指导意义。

METHODS:Nimodipine solid dispersions were prepared using solven t-dispersion with excipientsN as carriers. DTA,X-ray powder diffraction,Scanni ng electron microphotographs and Infra-red spectra were used to determine the s tatus of nimodipine in carriers, and dissolution characteristics were studied in water.

以混合辅料N为载体采用溶剂分散法制备固体分散物，差热分析，X-射线粉末衍射，扫描电镜和红外线光谱鉴别药物在载体中的状态，并进行溶出度研究。

Ompare the experimental results with analytical results and sum up the factors which affect the flow front of underfill to find the method which can control the flow front, reduce the chance of short shot and air trap; therefore, enhance the reliable of underfill process of Flip-Chip.

AE(Computer-Aided-Engineering)模流分析模拟其流动情况；在完成实验与分析模拟之后，进行实验与模拟结果比较，归纳出影响底部充填波前形状的因素，并寻求控制底部充填流动波前形状的方法，降低短射与包风的发生，提高覆晶底部充填制程的可靠度。

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。