英语词汇“正切线”的中英文读音、翻译、固定搭配用法、短语词组及例句-英汉汉英双解词典-四方网

单词	正切线
释义	〔slope〕The tangent of the angle of inclination of a line, or the slope of the tangent line for a curve or surface.斜率：一条直线的倾斜角的正切或一条弧线或一个平面的正切线的斜率
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