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  1. heliostat

    • IPA[ˈhēlēəˌstat]

    美式

    • n.
      an apparatus containing a movable or driven mirror, used to reflect sunlight in a fixed direction.
    • noun: heliostat, plural noun: heliostats

    • 更多解釋
    • IPA[ˈhiːlɪə(ʊ)stat]

    英式

    • n.
      an apparatus containing a movable mirror, used to reflect sunlight in a fixed direction.

    Oxford Dictionary