钉齿耙

Combining the working principle of plough and harrow in agriculture that can realize to mix and comminute all kinds of material.

将农业用的犁耙工作原理结合到一起，可同时实现对多种物料的搅拌和粉碎。草耙，灰耙，钉齿耙

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。