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  1. heliograph

    • IPA[ˈhiːlɪə(ʊ)ɡrɑːf]

    英式

    • n.
      a signalling device by which sunlight is reflected in flashes from a movable mirror.;a message sent by heliograph; a heliogram.
    • v.
      send (a message) by heliograph;take a heliographic photograph of
    • verb: heliograph, 3rd person present: heliographs, gerund or present participle: heliographing, past tense: heliographed, past participle: heliographed

    • noun: heliograph, plural noun: heliographs

    • 釋義

    名詞

    • 1. a signalling device by which sunlight is reflected in flashes from a movable mirror.
    • a message sent by heliograph; a heliogram.
    • 2. a telescopic apparatus for photographing the sun.
    • 3. historical a type of early photographic engraving made using a sensitized silver plate and an asphalt or bitumen varnish.

    動詞

    • 1. send (a message) by heliograph the glasses seemed to be heliographing a warning
    • 2. historical take a heliographic photograph of he could only heliograph static subjects in very intense light
    • 更多解釋
    • IPA[ˈhēlēəˌɡraf]

    美式

    • n.
      a signaling device by which sunlight is reflected in flashes from a movable mirror.
    • v.
      send (a message) by heliograph: the glasses seemed to be heliographing a warning

    Oxford American Dictionary