球几何学

Comprehensively making use of the basic theory, such as Space Analytic Geometry, Gear Meshing Engagement Theory, Method of Mathematical Calculation, Theory for Error Analyzing and Data Processing, the author has established the mathematical models of the new method, which has included the analytic mathematical model for precision orientation, the mathematical model for the ball's diameter and the measuring diameter, the mathematical model about the ball's centre, the calculation model for tooth alignment diviations and the model for tooth alignment error evaluation.

本文综合应用空间解析几何学、啮合原理、计算方法、误差理论与数据处理等有关基础理论，推导建立了新方法的数学模型，包括：确定定位关系的解析法数学模型，测球直径与测量半径的数学模型，测球球心的数学模型，齿向偏差的计算模型以及齿向误差的评定数学模型等。

A non-Euclidean geometry that regards space is like a sphere and a line is a great circle.

视空间为球而线为圆圈的非欧几里得几何学。

The line that joins the midpoints of the nonparallel sides of a trapezoid.

视空间为球而线为圆圈的非欧几里得几何学。

Fuller invented the Geodesic dome coined the term synergetics, a "Geometry of Thinking," a metaphoric language for communicating experiences using geometric concepts, long before the term synergy became popular.

福勒发明了多面体球顶，创造了&协同几何学&这一词汇，提出&几何学的思维&，开创了用几何学的概念、使用隐喻语言沟通经验；很长时间以后，&协同&这一词语才流行起来。

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。