次硫酸盐

From the beginning of the 1980's the visibility dramatically deteriorated,obviously increasing haze weather,in which there are three big fluctuations,respectively showing the periods of pollutions of dust,sulphate and dust,fine particle from photochemical process and sulphate and dust accompanying the developmen...

自1980年代初开始，该地区的能见度急剧恶化，灰霾天气显著增加，其中有3次大的波动，分别代表广州地区经济发展相伴随的粉尘污染、硫酸盐加粉尘污染、光化学过程的细粒子加硫酸盐加粉尘的复合污染时期。

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。