| 单词 | 自变量 |
| 释义 | 〔domain〕The set of all possible values of an independent variable of a function.定义域：函数自变量的所有可能值的集〔derivative〕The limiting value of the ratio of the change in a function to the corresponding change in its independent variable.导数：函数相应其自变量的变化率的有限值〔zero〕An argument at which the value of a function vanishes.（坐标的）起点：函数自变量的值等于零〔period〕The least interval in the range of the independent variable of a periodic function of a real variable in which all possible values of the dependent variable are assumed.小数点：周期函数自变量变化的最小区间，其中从属变量的所有可能值都已事先确定〔frequency〕The number of repetitions of a complete sequence of values of a periodic function per unit variation of an independent variable.频率：当自变量变化一个单位时，周期函数取同一完整数序的重复次数 |
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