双球面的

Took the different diameters double-row bearing slewing ring asexample, this dissertation studied the distribution of axial press ofthe rolling body under axial load and throw moment, the contact pressbetween two outer seat-rings which are connected to the main machinewith high strength screw bolts.

本文以双排异径球式回转支承为例，对球式回转支承在承受轴向载荷和倾翻力矩时的滚动体轴向正压力大小、分布及由高强度螺栓与主机连接的滚圈接触面的接触力进行了详细的理论推导和实际计算，说明在双排球式回转支承的结构静力分析过程中，可以将滚圈安装接触面的接触力简化为铅垂方向的均布载荷。

The people very are early realize CVT are facilitate driving, enhance the vehicles fuel oil efficient ideal installment, appears the bipyramid ball, the plate, the hooped column body from several dozens years ago and so on develops the leather belt transmission, but as a result of the rubbing surface friction coefficient and the components withstanding unit pressure limit, adds in the processing craft and the control difficult problem, cannot transmit compares the high efficiency, only limits uses in on the compact car.

人们很早就意识到CVT是方便驾驶、提高车辆燃油经济性的理想装置，由几十年前出现的双锥体球、盘、环柱体等发展到皮带传动，但由于摩擦面的摩擦系数及零件承受单位压力的限制，加之加工工艺和控制上的难题，不能传递较大功率，仅限用于微型汽车上。

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。