二产的

Guangdong said a county-level leadership, grain farmers will always be rich, the development of urbanization, industrialization, we must project to land; A large grain-producing counties north leadership were of the view that the main grain-growing areas are backward, because two off underdevelopment.

广东省一位县级领导说，种粮食农民永远富不了，要发展城镇化、工业化就要上项目，就要用地；北方一个产粮大县的领导则认为，粮食主产区之所以落后，就在于二产不发达。

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。