Zenithal Hourly Rate

短语

词形变化

Zenithal Hourly Rates 复数 Zenithal Hourly Rates

别名

ZHR

释义与例句

n.
  1. 1.

    The number of meteors a single observer would see in one hour under a clear, dark sky (i.e. up to the limiting apparent magnitude of 6.5).

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