1、有向数
中一数学 / 有向数 / 页 1 第1章 有向数 ( Directed Numbers ) 第1章 有向数 ( Directed Numbers ) 1 . 1 正数 ( Positive Numbers ) 和 负数 ( Negative .
2、[数]有符号数
... 有向线段 directed line segment 有符号数 directed number 导序集{注:这是预序集；且任两元均有共同后元者} directed set ...
3、指示数
directed number » 指示数 write a short passage about it. » 写一个关于它的短文。
4、方向数
...integer (whole number) 整数directed number 方向数number line 数轴 ...
directed sum number有向和数
directed signed number有向数
concept of directed number定向数的概念;被指挥的数字的概念;指示数的概念;概念的指示数
number of directed cycle有向圈的数目