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单词 atomic clock
释义
Atomic Clock
nnoun.artifacta timepiece that derives its time scale from the vibration of atoms or molecules
Hypernyms:horologe timekeeper timepiece
Inherited Hypernyms:atomic clocktimepiecemeasuring instrumentinstrumentdeviceinstrumentalityartifactwholeobjectphysical entityentity
Direct Hyponyms:ammonia clockcaesium clock
Full Hyponyms:
ammonia clockcaesium clock
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更新时间:2024/12/22 20:57:09