单词	harmonic series
释义	harmonic series A series a1 + a2 + a3 + …in which a1, a2, a3,…is a harmonic sequence. Often the term refers to the particular series , where the n‐th term an equals 1/n. For this series, an → 0. However, the series does not have a sum to infinity since, if sn is the sum of the first n terms, then sn → ∞. For large values of n, sn ≈ lnn + γ, where γ is Euler's constant.
随便看	resistant statistic resistive force resolution resonance response bias response variable rest frame rest mass restriction resultant retardation retraction reverse mathematics reverse triangle inequality reversion to the mean revolution revolve Reynolds number Reynolds transport theorem rhombohedron rhombus RHS RI Riemann, (Georg Friedrich) Bernhard Riemann hypothesis

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