曲线坐标系

By this means, the measuring of mileages, the direction of railway, the little partial angle, the altitude of rail surface can be given at the same time.

置镜任意点，每个曲线建立相对独立的直角坐标系，同时完成里程丈量、线路方向、小偏角、轨面高程的测量。

Therefore, based on the spectral method of simulation work curve of logarithm with content, make X coordinate keep linear.

为此，本文在光谱法中模拟工作曲线时用含量的对数作 X坐标，使坐标系保持线性。

In the experiment of measuring the basic electric charge by using Millikan method,the selection of oil drop should satisfy the principles of which fall time is within 20 minutes and charged amounts of oil drop are less than five.

在密立根法测量基本电荷电量的实验中，油滴选取应满足下降时间在20秒左右，油滴的带电荷数要少于5个的原则，本文在理论上分析了油滴选取原则的依据，给出了在油滴的下落时间和平衡电压的坐标系中等电荷数的多重曲线，为选择合适的油滴提供了理论上的判断依据。

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。