| 单词 | circle of equal altitude |
| 释义 | circle of equal altitude [`sǝr·kǝl ǝv `ē·kwǝl `al·tǝ´tüd] GEODESY A circle on the surface of the earth, on every point of which the altitude of a given celestial body is the same at a given instant; the pole of this circle is the geographical position of the body, and the great-circle distance from this pole to the circle is the zenith distance of the body. |
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