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单词 okta
释义

Definition of okta in English:

okta

nounPlural oktas ˈɒktə
Meteorology

  • A unit used in expressing the extent of cloud cover, equal to one eighth of the sky.

    〔气象〕（云量单位）天空的八分之一

    Example sentencesExamples
    • It was 0.2 + / 0.06 (54% of clear sky conditions) for activities in which cloud cover was measured at 7 okta or greater.
    • Overcast skies (typically 7-8 okta of stratus) reduced exposures by a mean of 54%.
    • The amount of sky covered is typically measured in oktas, eighths of sky cover, a non-linear scale.

Origin

1950s: alteration of octa-.
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更新时间：2025/7/4 17:24:45