角峰

Based on Fermat's theorem, the law of reflection and refraction is obtained, and the geometrical ray tracing method of reflected light is introduced. In response to geometric optics rainbow theory and Airy rainbow theory, the relationship formula of the N-order rainbow angle with the refraction index and the Airy peak value position formula are derived, and the physics causation of the first order rainbow are discussed and analyzed in detail. The distribution properties of the first and second order Airy structures of spherical particles are calculated.

利用费马原理推导了反射和折射定律，以反射射线的跟踪为例介绍了几何光学射线跟踪方法的推导过程；根据几何光学彩虹理论和Airy理论，推导了N阶几何光学彩虹角与入射角和折射率的关系及Airy峰的位置表达式，详细阐述了一阶彩虹形成的物理原因，计算了球形粒子的一、二阶Airy分布。

Echo the human landscape and natural scenery, unique tourism resources, Ming Great Wall, the eastern starting point of intersection of the old leading the Great Wall and the sea, spectacular; the best in the world famous customs, imposing; Cape Mount the Great Wall, Peak sets dangerous; Meng Jiangnu Temple, interpretation of the four Chinese folk legends, one of Jiangnvxunfu moving story; in north China's largest natural Granite Cave - Genyo Kwu Tung, located in Qifengyishi longevity in the mountains; Saibei Pearl - Yan Sehu the showground.

人文景观与自然景观交相辉映，旅游资源得天独厚，明万里长城东部起点老龙头长城与大海交汇，蔚为壮观；驰名中外的天下第一关，气势雄伟；角山长城，峰台险峻；孟姜女庙，演绎着中国民间四大传说之一，姜女寻夫的动人故事；中国北方最大的天然花岗岩石洞-玄阳古洞，坐落在奇峰异石的长寿山中；塞北明珠-燕塞湖，美不胜收。

Objective To analyze the MRI features of tumors in the cerebellopontine angle.

来源： 作者：段峰，郝大鹏，徐文坚［摘要］目的：探讨桥小脑角区肿瘤的MRI特征。

Gas chromatography, gas-liquid-solid polymer PLOT column, isosteric heats of adsorption

etex碳填充柱中加入1·5%的角鲨烷，通过增加峰的对称性提高了对低分子量碳氢化合物的分辨能力·Bruner等'''首先将石墨化碳黑毛细管柱，用液相改性后制备成石

Along the low-angle overthrust Early Permian marble and Early Triassic sandy slate were thrust southward over Paleocene-Eocene purplish red conglomerate of the Paleocene-Eocene Fenghuoshan Group and brick-red sandy conglomerate of the Oligocene Yaxicuo Group, forming many klippen of varying scales, and thick fault brecci.

沿低角度逆冲断层，早二叠世大理岩和早三叠世砂板岩自北向南逆冲推覆于古新统—始新统风火山群紫红色砾岩和渐新世砖红色砂砾岩之上，形成大量不同规模的飞来峰；沿主逆冲断层发育厚层断层角砾岩与断层泥，局部形成碳酸盐质糜棱岩。

X-ray thin film method and its derivative techniques have lots of superiorities: larger irradiated surface area, higher diffracted intensities, better monochromic and parallel X-ray beam, higher resolution, and easier operation procedure.

In或Al含量的增加，将使立方相InGaN(002)和{113}衍射峰宽化，使六角相InGaN和AlGaN、立方相InGaN外延层垂直方向和水平方向的均匀应变增加，固溶体晶粒尺寸细化，非均匀应变增加。

The above results showed that physiological AAI pacing maintained a normal EAS and VAS, and improved or enhanced VSS; while nonphysiological VVI pacing and physiological DDD pacing induced the decrease in VSS due to an abnormal EAS and VAS. Furthermore, with increasing the pacing rate, VSS was markedly decreased.The quantitative comparison of parameters of left ventricular systolic function obtained by computerized ERNA showed that AAI pacing induced the significant increases in ventricular ejection rate and stroke volume with concomitant shortening of ejection time.

应用计算机-ERNA相位分析技术，对13例生理性AAI、13例非生理性VVI及6例生理性DDD患者，分别进行等相位电影，相位图，相位直方图和VSS参数的静动态观察和定量比较，结果显示：AAI起搏可维持正常EAS和VAS，心室相位均匀一致，并且VSS参数-相角程，半高宽和峰相位标准差均较起搏前分别降低，提示起搏后VSS有所改善或增强。

The mineralization-alteration in Shuangfengshan appears in downward succession of silica breccia zone, low grade gold-bearing silica rock zone, quartz stockwork zone, pyrite montmorillonite zone and propylitic alteration zone.

这两个成矿阶段同源同位的蚀变矿物晕叠套，造成双峰山矿床蚀变分带从上至下为隐爆矽质角砾岩化带、低金品位矽质岩带、石英网脉带、黄铁矿蒙脱石化带和青磐岩化带。

The minera lization_alteration in Shuangfengshan appears in downward succession of silica b reccia zone, low grade gold_bearing silica rock zone, quartz stockwork zone, pyrite montmorillonite zone and propylitic alteration zone.

这两个成矿阶段同源同位的蚀变矿物晕叠套，造成双峰山矿床蚀变分带从上至下为隐爆硅质角砾岩化带、低金品位硅质岩带、石英网脉带、黄铁矿蒙脱石化带和青磐岩化带。

Shanghai SAFRAN Packaging Machinery Ltd., founded in 2005 in Shanghai, the Secretary's main business is the manufacture and packaging machinery sales, the main products have pillow charter, angle packaging machine, large vertical packaging machine, granule packing machine, packaging paste machine, bag packaging machines, balers and other dozens of products.

上海赛峰包装机械有限公司于2005年成立于申城，本司主要业务是包装机械的制造与销售，主要产品有枕包机，折角包装机，大型立式包装机，颗粒包装机，膏体包装机，袋泡茶包装机，打包机等数十种产品。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。