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单词 semidiameter
释义

Definition of semidiameter in English:

semidiameter

nounˌsɛmɪdʌɪˈamɪtəˌsemēdīˈamitər
Geometry

  • Half of a diameter.

    〔几何〕半径

    Example sentencesExamples
    • The moon will, at the full, be totally eclipsed, if its latitude is less than the difference between its own semidiameter, and that of the earth's shadow.
    • By the semidiameter of a celestial object, is meant the angle which the radius of its apparent circular disc subtends at the eye of the observer.

Definition of semidiameter in US English:

semidiameter

nounˌsemēdīˈamitər
Geometry

  • Half of a diameter; radius.

    〔几何〕半径

    Example sentencesExamples
    • The moon will, at the full, be totally eclipsed, if its latitude is less than the difference between its own semidiameter, and that of the earth's shadow.
    • By the semidiameter of a celestial object, is meant the angle which the radius of its apparent circular disc subtends at the eye of the observer.
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更新时间：2024/12/27 2:14:42