不了解情况

Without decreasing the factor of safety in the finished product.

利用无损探伤方法和工艺，已使我们能在不降低成品安全系数的情况下，提高对材料的了解程度。

Wu Zexian, China's ambassador to Congo, said he did not know much about the operations of Chinese smelters in Katanga.

中国驻刚果大使吴泽献表示，他对加丹加省中国冶炼厂的经营情况了解不多。

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。