查询词典 spherical cap

Then, combined with spherical-harmonic spread formula and Tscherning/Rapp experiential covariance function, a new covariance function estimation method is created, whose configuration capability is tested and analyzed.

第七章概括了本文研究的主要内容，结合似大地水准面精化的要求和本文研究内容，介绍了本文力求解决的关键问题，并简要阐述了似大地水准面精化的未来发展趋势。

A pulsar is a celestial object that emits light in short burst a pulsar in the crab nebula flashes at a rate of 30 times/s,suppose the light pulses are caused by the rotation of a spherical object that emits light from a pair of diametrically opposed "flashlights" on its equator.

脉冲星是一种以短爆发形式辐射光的天体。假设球型天体赤道面上有一对"发光塔"，并且这对发光塔的联线构成赤道面的直径，进一步假设光脉冲产生于球形天体的转动，那么巨蟹座星云中的一个脉冲星的闪光频率是每秒30次。

Then interpolating cubature formulae is given based on Lagrange interpolation formulae. Secondly it make use of the cubature formula on the triangle to construct cubature formulae on the correspondent spherical triangle.

通过把其定义域上的积分化为平面单纯形{u =(u1， u2， u3)： u1 + u2 + u3 = 1， u1， u2， u3〉0}上的积分，然后利用平面单纯形上数值积分公式给出其在球面三角形上的对d次齐次多项式精确成立的Gauss求积公式的构造方法。

The spherical equivalence of cycloplegic auto-refraction equal or less than -0.5D in either eye is defined as myopia and that equal or higher than +2D is defined as hyperopia.

分析了学龄期儿童的纵向屈光改变情况、近视眼的发病率及其危险因素、儿童视力现状以及一些常见眼病的患病率情况。

The results show that as the distance of waveguide to mirror is short, the couple efficiencies for EH11 mode of the cylindrical mirror and the spherical mirror are similar but the cylindrical mirror has stronger restraining function on EH21 and EH12 modes, and as the distance of waveguide to mirror is long, the cylindrical mirror has more restraining function on EH21 mode and less restraining function on EH12 mode.

同时相对球面反射镜，柱面反射镜对EH21模和EH12模具有更强的抑制作用。在d较大时，相对球面反射镜柱面反射镜对EH21模的抑制作用将会变得更强，而对EH12模的抑制作用将会减弱。标签 laser technique reflection coupling diffraction waveguide laser square waveguide cylindrical mirror

It has the effect of a system that consists of a cylindrical lens and a spherical lens.

给出了制作这两种元件的原理、方法、参数和相应的实验结果。

The special optical system including a main lens, a spherical -cylindrical lens and an inverting prism was designed.

通过设计一个带有主透镜、球面镜-柱面镜组合以及转像棱镜的特殊光学系统。

And the coupling efficiencies of the cylindrical mirror and the spherical mirror are studied and compared with diffraction theory.

应用衍射理论详细推导了柱面反射镜和球面反射镜对方形波导激光器的耦合效率。

According to the structure and motion characteristics of the spherical offset mono-cone bit, compound cylindrical coordinates were set up, and basic geometric equations and the conditions of teeth to penetrate rock for the bit were presented.

针对偏心单牙轮钻头的结构和运动特点，利用复合圆柱坐标系统的基本原理，建立了偏心单牙轮钻头几何学基本方程和牙齿对岩石的吃入条件。

Our company relates to optics wafer treating right away starting from the 80's, In the field of wafer treating have accumulated large amount of the special field experience developing、giving birth to a child and managing. Grasp the various optics wafer Flat surface、Spherical surface、Cylindrical surface complete set processing technology.

本公司自八十年代初就开始涉及光学晶片加工，在晶片加工方面积累了大量开发、生产及管理的专业经验，掌握各种光学晶片平面、球面、柱面的全套加工技术。

The two-acre Dunbar Community Garden in Little Rock has served as a model for several years.

几年来，坐落于小石城，占地两英亩的邓巴社区菜园树立了一个标杆。

Jerry points to the jacket hanging in the bathroom. It's ruined, and unwearable What?

杰瑞指着洗手间里挂着的夹克，毁了，不能穿了）什么？