查询词典 paraboloid

A calculation method and calculation results that show that a new kind of shaped paraboloid antennas can produce a ringy radiation pattern is presented.

通过数值计算发现将抛物线绕通过焦点的非抛物线对称轴旋转而形成的赋形抛物面天线可产生环状的方向图主瓣(此主瓣指的是主瓣最大值处)。

At last, the author presents the multi-coordinate NC machining methods of turbine wheel with non-developable ruled paraboloid.

从理论上深入分析了叶型为非可展直纹抛物面的叶轮的五坐标侧铣、四坐标侧铣和三坐标端铣数控加工计算方法。

Taking FANUC-0i NC System for example,this paper introduces the methods of machining paraboloid and some points for atte-ntion by using macroprogram .

以FANUC-0i数控系统为例，介绍在数控车床上用宏程序加工抛物面的方法以及一些注意事项，介绍用分支语句和重复语句编写加工抛物面的粗、精加工程序的技巧。

When the pinhole is at a distance of 200 m, the spherical aberration of a perfect paraboloid will be reduced to about 0.027 mm, equivalent to a 1/10 wavefront error.

当此针孔距离是 200 公尺时对壹个完美抛物面的球面像差将被减小至0.027mm，相等于 1/10 波前误差。

The algorithm only needs to plot a set of equi-intensity curves of diffuse reflection and specular reflection on the rotating paraboloid,and then realistic image can be obtained.

与交互式计算机成像不同，实时CIG的时间有严格的限制，它要求计算机在电视一帧时间(40ms)内生成一幅完整的高真实感的图象。

Solar energy ; high--temperature furnace ; collector; optical sysem ; lens by parts ; transmissionreflection type ; paraboloid mirror ; family of confocal rotation paraboloids

太阳能；高温炉；聚光器；光学系统；分部透镜；透反型；抛物面镜；共焦旋转抛物面族

The problems include Catmull-Clark subdivision surfaces can"t precisely represent standard conicoid except paraboloid, and it can"t modify the shape of limited surfaces when the original control mesh be given.

Catmull-Clark细分曲面无法精确表示除抛物面外的常规二次曲面；在给定初始控制网格的情况下，难以调整所生成曲面的形状等。

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。

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。

Finally, a sixteen-meter - caliber-circinal-paraboloid structure under the action of self-weight is optimally designed.

对在自重载荷作用下的16m口径圆抛物面天线结构进行了优化设计，结果表明该优化程序收敛快、稳定性好。

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。