名词
中文翻译：谐数
同义词：
['和数，调和数例句：1. The harmonic number is the nth term in a geometric series where each term is less than or equal to the previous one.（调和数是几何级数的第n项，其中每一项都小于或等于前一项。）']
例句：
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1. The harmonic number is the nth term in a geometric series where each term is less than or equal to the previous one.
调和数是几何级数的第n项，其中每一项都小于或等于前一项。
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2. In mathematics, the harmonic numbers are used to calculate the sum of an arithmetic sequence.
在数学中，调和数用于计算算术序列的和。
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3.The harmonic numbers are also used in probability theory to describe the distribution of events.
调和数也在概率理论中用于描述事件的发生分布。