球面角

We suggest that instead of the general α0.5-V curve the α0-V curve be used to determine the fiber parameters, where α0, and α0.5 are respectively the angles corresponding to the first minimum and the main lobe half power point of the radiation pattern.

此外，还研究了平面检测器探测球面波束以及用"两点法"测量角宽等问题。实验中，建立了两套测量系统，在O.63μm与1.32μm波长处，测量了单模光纤参数，给出了实验结果，并与其它方法的测量结果作了比对。

According to the principle of the diameter of a circle corresponding to the right angle and the principle of short side for little angle in right triangle, projecting the initially-chosen point to the hyper-planes of the linear equation group in which every linear equation can be regarded as a hyper-plane and the projection points can be obtained. The initially-chosen point, and one arbitrary projection point, and the solution point are all on the surface of the relative hyper-geometry ball, therein-to, there is a projection point which is nearest to the solution point and it can be regarded as the next iterative initially-chosen point, so the solution problem of the linear equation group can be changed as an iterative problem of approaching the solution on the surface of a hyper-geometry ball.

根据直径对应的圆周角足直角以及直角三角形中短边对小角的原理进一步知道，当将初始点向线性方程组中各个方程所代表的超平面上投影得到投影点时，初始点和其任何一个投影点及方程组的解点都将位于一个相应的超球面上，其中必定存在一个投影点离问题解点的距离最短，即把该点作为下一次迭代的初始点，从而可将线性方程组求解的问题变成球面上逼近解点的迭代问题。

In this paper, a simple calculating method to establishthe interconversion between Eulerian angles and direction cosine by Spherical Trigonometry is presented.

为了从多个角度使用不同的手段研究旋转变换问题，本文提供了一种非常直观、简捷的计算方法，即利用"球面三角"的方法建立了用欧拉角与用方向余弦描述三维图形旋转变换的转换关系。

Variety including gulley ball bearing, cylindrical roller bearing, spherical surface roller bearings, circular cone roller bearings, angle contact ball bearing, needle bearing and other many kinds of types.

品种包括深沟球轴承、圆柱滚子轴承、球面滚子轴承、圆锥滚子轴承、角接触球轴承、滚针轴承及其它多种类型。

The ball bearing unit is possible working in the non-concentric condition with the maximum self-correcting angle of 2 degrees.

带座外球面轴承可在两轴承座不同心的情况下工作，最大自动调整角可达2o。

Luoyang City of the Century Bearing Co., Ltd. was established in 1992, is located in the ancient capital of nine - Luoyang, is engaged in various kinds of large, large, non-standard, the special structure of the professional bearing manufacturer, the company cylindrical roller bearings, deep Groove ball bearings, angular contact ball bearings, wheel bearings, mill bearings, precision machinery bearings for leading products, but also production-aligning roller bearings, needle roller bearings, spherical bearings, bearings, and other products, and production based on user needs Various types of non-standard bearings.

洛阳市金世纪轴承有限公司成立于1992年，地处九朝古都——洛阳，是从事各类大型、特大型、非标准、特殊结构等轴承的专业生产厂家，公司以圆柱滚子轴承、深沟球轴承、角接触球轴承、转盘轴承、轧机轴承、精密机械轴承为主导产品，还可生产调心滚子轴承、滚针轴承、外球面轴承等各类轴承产品，并可根据用户需要生产各类非标准轴承。

Then the propagation of an arbitrary nonideal optical beam is analyzed. In terms of the moment theorem, the performance of modes of BOR is analyzed from both points of view of geometry optics and diffractive optics. Comparing BOR with the resonators using plane mirror and spherical mirror or using plane mirror and aspherical mirror by finite element method, the design procedure for BOR is gave.

然后以衍射的角谱理论为基础，用矩量定理讨论了任意光束的传播规律，从几何光学和衍射光学的角度完整地分析了二元光学谐振腔的模式特征，用有限元方法数值对二元光学谐振腔、非球面腔和球面腔进行衍射分析，比较了三种腔型的差异，给出了二元光学谐振腔的设计方法。

And this paper also shows the structure and parameters of the optical system. The Xenon light of super high voltage is used as interferential source. The position of it is on the focus of the reflector of ellipsoid surface. After reflecting, its lights form a collective point . This point and objective focus of collimation lens are superposition. Though the collimation lens, the beam of light become parallel lights. Then though the Coude Reflector and radiation system of special prism, the lights become a beam of light with 3 ° emanative angle.

该光学系统选用超高压氙灯作光源，使其位于椭球面反射镜的一个焦点上，发出的光线经椭球面反射后所形成的汇聚点与准直负透镜组的物方焦点重合，光束经准直系统后变为平行光束，此平行光束再经库德反射镜和特殊发散棱镜系统，形成具有3°发散角的发散光束，用来干扰敌方设备。

9 Class from P0-P2 level, medical equipment bearings, wheel bearings (four points, cross-, three-row, double row, ball columns mixed) large-scale, large deep groove ball bearings, cylindrical roller bearings, spherical self-aligning roller bearings, angular contact ball bearings, tapered roller bearings, thrust ball and thrust angular contact ball bearings, thrust cylindrical roller bearings, thrust tapered roller bearings, Thrust Self-aligning roller bearings, wheel bearings and inch tapered bearing with special structure and non-standard and dozens of types, and can be processed inside diameter Φ150 ~Φ5000mm bearings.

0，1，2，3，4，5，6，7，8，9类从P0-P2级，医疗器械轴承，转盘轴承（四点，交叉，三排，双列，球柱混合）大型，特大型深沟球轴承，圆柱滚子轴承，球面调心滚子轴承，角接触球轴承，圆锥滚子轴承，推力球和推力角接触球轴承，推力圆柱滚子轴承，推力圆锥滚子轴承，推力调心滚子轴承，转盘轴承和英制圆锥及非标准特殊结构轴承等几十种类型，可以加工内径Φ150～Φ5000mm的轴承。

Specialized in manufacturing GB screws, pan head screws, lock tool screws, furniture screw, hex socket screws, nuts, carriage bolts, special bolts, pins, plain head hex socket screws, rivets, sphere screws, truss head screws, set screws, various bolts and non-standard screws.

专业生产各类国标螺丝；盘头螺丝；锁具配套螺丝；家具配套螺丝；内六角螺丝；螺母；马车螺栓；异形件螺栓；销；平头内六角螺丝；对扣螺丝；铆钉；球面螺丝；大扁头螺丝；各种非标；各种螺栓；紧定螺丝

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。