英语词汇directed distance怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	directed distance
释义	directed distancen.Mathematics（名词）【数学】 A segment of a line having an indicated positive sense.正线段：一条直线中显示正方向的线段
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