Design: a randomized and interval grouping design.
设计：随机区间分组设计。
When grouping by prefix characters, you must set the Interval to an integer.
当以前缀字符分组时，您必须将“间隔”设置为整数。
The ichnofacies is the grouping of characteristic trace fossil association tending to rscirrence through a rather long interval of geologic time, and their environmental implication.
遗迹相是指一组具有特征的遗迹化石组合，在一段相当长的地质时期中不断的重视以及它们的环境意义。
The method is phase shifting with any four steps in a facultative interval, and in combination with grouping disposal the parameter is got.
这种方法采用步距任意的四步步进移相，并结合分组处理方式来求得所求参数。
The method is phase shifting with any four steps in a facultative interval, and in combination with grouping disposal the parameter is got.
这种方法采用步距任意的四步步进移相，并结合分组处理方式来求得所求参数。
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