... 折光差；折射 refraction 交点退行regression of nodes 天体相对方位 relative azimuth ...
2
?被称为交点的退行
...结果是交点线会迟缓转动， 这种转动的方向与地球公转的方向相同， 周期约为 18.61 年， 被称为交点的退行 (regression of nodes)。
双语例句
1
This regular regressionof the Moon's nodes is the other cycle that determines the patterns of eclipses over time.
此月球交点有规则的退行是决定日食类型的另一个循环。
2
Combining the new measure with the forward regression orthogonal least square (OLS), not only the parameters of the classification hyperplane, but also the important input nodes can be obtaind.