electro-chronograph
now historical
noun
An instrument for recording the exact time of (usually astronomical) events by means of interruption of an electrical circuit.
Origin
Mid 19th century.
| 单词 | electro-chronograph |
| 释义 | electro-chronographnow historical noun An instrument for recording the exact time of (usually astronomical) events by means of interruption of an electrical circuit. Origin |
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