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词汇 heliometrical
释义 heliometrical 英hiːlɪ'ɒmɪtə美ˌhiːliː'ɒmɪtə
基本英英
n.太阳仪形容词heliometric副词heliometrically名词heliometry
Noun:
an instrument used to measure the angular separation of two stars that are too far apart to be included in the field of view of an ordinary telescope
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