The integers divide the number line into infinitely many half-openintervals.
整数把数轴分成无穷多个半开区间。
2
In section 2, based on knowledge class openintervals are constructed, then a kind of specific Lebesgue measures, called knowledge measure, is defined and researched.
第2节,以知识分类为基础,构造开区间,定义和研究了一种具体的勒贝格测度——知识测度。
3
Narrow board walks extended out, passing here a house, and there a store , at far intervals, eventually ending on the open prairie.