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单词 heliometer
释义
Heliometer
nnoun.artifactan 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
Hypernyms:measuring device measuring instrument measuring system
Inherited Hypernyms:heliometermeasuring instrumentinstrumentdeviceinstrumentalityartifactwholeobjectphysical entityentity
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更新时间:2024/9/21 12:29:41