底数 (对数)
底数（英语：radix 或 base，通常简称为底），又称基数；指的是指数 b 中的 b，或是对数 logb 中的 b。这里的 n 称为幂，b 代表「以 b 为底数的 n 次幂」；而 logb 称为「以 b 为底数的对数」。通常 b 与 n 是非零的实数或复数。
以 b 为底数的指数b，可以转换成对数 logb。因此:
radix
/'rædɪks/ /'redɪks/
英汉-汉英词典
n. 基数；根
词组 | 习惯用语
radix astragali 黄芪（中草药）
radix scutellariae 黄芩
radix puerariae 葛根
radix isatidis 板蓝根
radix aconiti 川乌
radix rehmanniae 生地，地黄
radix paeoniae alba 白芍
radix bupleuri [医]柴胡
radix paeoniae rubra 赤芍
radix curcumae 郁金
中文百科
英语百科
Radix 底数 (对数)
In mathematical numeral systems, the radix or base is the number of unique digits, including zero, used to represent numbers in a positional numeral system. For example, for the decimal system (the most common system in use today) the radix is ten, because it uses the ten digits from 0 through 9.
近义、反义、联想词
近义词
n.number
联想词
英英词典
radix n.
- (numeration system) the positive integer that is equivalent to one in the next higher counting place
- 10 is the radix of the decimal system
synonymous： base
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