Evection

[i'vekʃәn]

解釋/意思:

(-) The act of carrying up or away; exaltation.

(-) An inequality of the moon's motion is its orbit to the attraction of the sun, by which the equation of the center is diminished at the syzygies, and increased at the quadratures by about 1¡ 20'.

(-) The libration of the moon.

斐迪南整理

解釋/意思:

n. (astron.) a lunar inequality resulting from the combined effect of the irregularity of the motion of the perigee and alternate increase and decrease of the eccentricity of the moon's orbit.

加德纳整理