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The existence of supremum and infimum of the bounded set in the noncompact fuzzy number space E〓 is proved in a quite different way.

利用完全不同的方法证明了非紧模糊数空间中有界集的确界存在性。

This on one hand the population basis that online parents of profit from China and the explosive type growth that follow parental number a few years this form; On the other hand, the expenditure that Chinese parents gets on in next generation bodies is rigid demand more, the total spending stability of the juvenile products that forms from this is in annual 50 billion - 55 billion between, the effect that suffers economic fluctuation is quite finite.

这一方面得益于中国上网父母和准父母人数这几年的爆炸式增长形成的人口基础；另一方面，中国父母在下一代身上的花费多为刚性需求，由此形成的儿童用品的总消费稳定在每年500亿-550亿之间，受经济波动的影响相当有限。

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。