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    heliostat

    详细解释:n. 日光反射装置
    【医】 定日镜

    详细解释:


    he.li.o.stat

    n.(名词)
    An instrument in which a mirror is automatically moved so that it reflects sunlight in a constant direction. It is used with a pyrheliometer to make continuous measurements of solar radiation.
    定日镜:一种仪器,装有一面会自动调控的镜子,以便不断朝某一恒定方向反射日光。与太阳热量计同时使用,以保持对太阳辐射的不间断测量