抛物面

In this paper, a new method for aspheric conicoid machining is offered by using normal equidistance line offsetting methods.1、Obtain ecumenic equation of normal equidistance offsetting line methods for aspheric conicoid machining induced from mathematical equations of paraboloid, hyperboloid and ellipsoid surface; reason the conditions for avoiding of tool intervening.2、Bring forward the general design project for machining tool together with some primary components based on the conception of non-sphere conicoid machining by using normal equidistance line offsetting.

其主要内容有： 1、进行了二次旋转曲面法线等距离线加工方法的理论研究，分别建立了抛物面、椭球面和双曲面的法线等距离线模型，得出了避免加工过程中刀具干涉的必要条件。 2、根据法线等距离线加工法的理论，确定了二次旋转曲面加工机床的总体设计方案，并进行了零部件的选择。

Hyperboloidal catadioptric omnidirectional imaging system.

抛物面折反射全景成像系统。

The Practical and New patent is to strack automatically the movement of the sun by a small sync unit using a mirror paraboloid and focus the sunsine on the surface of vacuum heat absorbing pipe, so as to heat the water in a single vacuum heat absorbing pipe with several times of energy,so that the water temperature rises till boils with heat exchange.

家用同步跟踪太阳能开水器是利用镜面抛物面在小型同步装置作用下自动跟踪太阳运动，以7倍于阳光直射的能量将阳光聚焦到真空吸热管的表面，对单根玻璃真空吸热管中的水进行加热，通过对流热交换，使容器中水温上升直至沸腾的太阳能开水器。

Inner lining for floppy disk, filtering material, soundproof felt, speaker cloth, filter lining resisting high, temperature, isolated layer for battery, seal ring lining, polishing wheel, cloth, anti-shock lining, all kinds of industrial wiping, cloth, strengthening material for parabolic, electrically-isolated cloth, antenna plate, cable cloth, strengthening substrate cloth for glass steel, conformal insulation, material for electric, motor, abrasive cloth, cloth for ventilation pipeline, substrate for, industrial tape, hose substrate

计算机软盘内衬、过滤材料、音箱隔音毡、喇叭布、耐高温滤衬、电池隔层、密封环内衬、抛光轮、布、防震衬垫、各种工业擦布、抛物面天线、盘加固材料、电气绝缘布、电缆布、玻璃钢增强基布、电机适形绝缘材料、砂皮布、通风管道布等、工业胶带底、软管基材。

The addition of conic funnet (这里的funnet疑似funnel——译者注)can partially improve the situation, but such horn antennas have uneven diagrams in vertical and horizontal planes, which is very undesirable for antennas that pretend to be good and efficient feed for dish.

加上圆锥形漏斗可以部分改善这一状况，但是这样的喇叭天线的水平和垂直方向图是不平衡的，这对于一个很好的，高效的抛物面馈源来说是个很大的麻烦。

The parabolic reflector of the G-type radiant cooler is one of the most important refrigeration parts, and the key point of calculating its exchange factor s to other parts by the Monte Carlo method is to simulate the location and direction of radiant packets correctly.

抛物面屏是G型辐冷器的主要制冷部件之一，蒙特卡洛法计算其与各辐射表面之间耦合因子的关键是正确模拟计算随机辐射能束的发射位置与发射方向。

Result The skewed parabolic profile is observed in CCA under 1:60 curvature and physiological average Reynolds number. As curvature and Reynolds number increase, the middle of horizontal profile appears sunken and the vertical profile is M-shaped. There are different profile shapes in different localities along the curved pipe.

结果 当颈总动脉的曲率等于1：60 时，在人生理平均流动雷诺数条件下，颈总动脉的速度剖面可用偏斜的抛物面来近似；当颈总动脉曲率增大或流动雷诺数增大时，弯曲平面上的速度剖面中部出现下凹趋势，垂直方向上出现M型速度剖面；沿管轴不同位置上的速度剖面形状不同。

When SAT TV offset parabolas are used, focus is determined by the position of the SAT TV converter.

当使用卫星电视偏馈抛物面天线时，焦点被限定在卫星电视变频器的位置。

When SAT TV offset parabolas are used, focus is determinate by the position of the SAT TV converter.

当使用卫星电视偏馈抛物面天线时，焦点限定在卫星电视变频器的位置。

Among them is, for example, the coffee can antenna that has gain of about 6-7 dBi and is very inefficient as a feed for offset parabolas.

它们是，例如，咖啡筒天线有大约6-7dBi的增益，做偏馈抛物面天线的馈源是非常低效的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。