Astronomy and Surveying. The angular distance of the visible horizon below the horizontal plane through the observer's eye; the apparent depression…
| 单词 | θ1521 |
| 释义 | the world > the universe > cosmology > science of observation > [noun] > taking of altitudes > apparent depression of horizon (1) dip1774 Astronomy and Surveying. The angular distance of the visible horizon below the horizontal plane through the observer's eye; the apparent depression… |
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