每季一次

Should actively create conditions for the establishment of quality management microcomputer database;the original records and classification of account must be clear, such as fill, shall not be altered, when the slip of the pen should be used in the central mistake a few strokes "=" and write correctly in their top of the figures and affix the seal rewriter;the quality and timely analysis of test data to collate, conducted quarterly summary, year-end summary.

要积极创造质量管理微机数据库的建立情况；原记录和账户的分类必须清楚，如实填写，不得涂改，当笔误，应在中央犯的错误使用几笔"="，写在他们的正确的数字顶部并加盖印章的改写；的质量和测试数据进行及时分析整理，每季进行一次总结，年终总结。

A hard goods distributor, with relatively static inventory, might opt to re-profile all items on a quarterly basis.

硬品经销商，相对静止的库存，可能会选择重调各项每季一次。

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。