查询词典 frustums

In guide switch of the present invention, the rotor and the stator are made to have conic frustums to constitute close contact for close fit, rather than loose fit, and this can eliminate spark during high-power microwave transmission, reduce the transmission loss caused by heating and reflection in the switch , and improve greatly the microwave transmission performance.

本发明通过把波导开关的转子和定子做成同锥度的锥形圆台面，使它们之间构成紧密接触，改动配合为紧配合，从而消除高功率微波传输时的打火现象，同时减小开关的传输损耗，减小开关的发热现象，降低反射，使微波传输性能大为改善，从而使这种开关能在高功率甚至超高功率微波系统中应用。

It is very important to research the precision forging process of double frustums sucker rod considering the conditions of our petroleum industry development.

针对目前我国石油工业发展的现状，开展抽油杆精锻工艺研究，具有极为重要的现实意义。

The precision forging process of double frustums sucker rod and its key process technology are researched in this paper by the way of numerical simulation and experimental study.

本文采用数值模拟和实验研究相结合的方法，对双圆台抽油杆精锻成形工艺及其关键技术进行研究。

A method is presented for calculating complex aerodynamic interference between grid fins and bodies,bodies and engine s,frustums and cylinders.

本文给出了栅格翼和机身、机身和发动机以及机身的台阶与其前后柱体等复杂气动力干扰的计算方法。

The algorithm first divides the scene into certain layers that do not intersect each other by light's frustums in light space, and generates one shadow map for each layer to ensure that any shadow map does not have the same sample points. Then a faster synthesizing scene shadow method, which avoids operations of pixel layer determination, is given to improve GPU's efficiency.

在光源空间中，利用光源视锥体将场景划分为不相交的多层区域，利用GPU为各层生成阴影图，以确保场景采样点不在多层阴影图中重复出现；同时给出了一种快速综合场景阴影效果的绘制方法，通过避免判断像素层次的操作提高了GPU的利用率。

By analyzing the forging process of double frustums sucker rod and using rigid visco-plastic material model and 3-D coupled FE simulation, the whole forging procedure are analyzed and simulated with finite element analysis software DEFORM. The results indicate the inner stress field, strain field, metal flowing law and forging travel-load curve during the forming procedure. The forming statuses, causation of defect of workpiece are predicted and so on.

通过对抽油杆镦锻工艺的分析，并采用刚粘塑性材料模型与有限元耦合的方法，运用有限元分析软件DEFORM-3D对双圆台抽油杆的成形过程进行了模拟，获得了成形过程中的内部应力、应变、金属流动规律及行程――载荷曲线，预测分析了工件成形状况、可能产生的主要缺陷的形式、部位和原因。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。