class interval造句

例句与造句

1. 1 jenks g f , coulson m r c . class intervals for statistical maps . internationally yearbook of cartography , 1963 . 119 134
   陆效中.统计地图分级的一般原则与定量标准的探讨.军测科技, 1987 ( 1 ) 10 17
2. It's difficult to find class interval in a sentence. 用class interval造句挺难的