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单词 Danjon prismatic astrolabe
释义 Danjon prismatic astrolabe
[`dän·yǝn priz`mad·ik `as·trǝ´lāb]
ENGINEERING
A type of astrolabe in which a Wollaston prism just inside the focus of the telescope converts converging beams of light into parallel beams, permitting a great increase in accuracy.
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