A ball mounted on a vertical rod or pole in a prominent location (typically the top of a tower), down which it is dropped at a predetermined time…
| 单词 | θ95515 |
| 释义 | the world > time > instruments for measuring time > [noun] > other instruments (5) time ball1834 A ball mounted on a vertical rod or pole in a prominent location (typically the top of a tower), down which it is dropped at a predetermined time… time candle1838 a candle used to mark or measure the passage of time, typically one made in such a way as to burn down at a uniform rate. chronoscope1846 An instrument for observing and measuring time. (a) An instrument for measuring very short intervals of time, which has been chiefly used in… time globe1858 a terrestrial globe rotated once in twenty-four hours by clockwork, and encircled at the equator by a stationary graduated ring showing the local… time disc1879 a disc used to represent or measure time in some way. |
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