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单词 apsides
释义 apsides
The two points in an astronomical orbit that lie closest to (periapsis ) and farthest from (apoapsis ) the centre of gravitational attraction. The line of apsides is the straight line that joins the two apsides. If the orbit is elliptical the line of apsides is the major axis of the ellipse
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更新时间:2025/6/22 22:04:14