| 释义 |
DEFINITIVE EXAMPLES 权威例句〔harmonic mean〕The reciprocal of the arithmetic mean of the reciprocals of a specified set of numbers.调和平均值美国传统〔mean〕A number that typifies a set of numbers, such as a geometric mean or an arithmetic mean.中数：代表一组数的一个数，如几何中数或算术中数美国传统〔probable error〕The amount by which the arithmetic mean of a sample is expected to vary because of chance alone.或然误差：因偶然性而导致的某一抽样的算术中介预期出现的偏差的量美国传统 |