| 单词 | invariable plane |
| 释义 | invariable planeinvariable planeThe unvarying reference plane through the center of mass of the Solar System and perpendicular to the direction of the angular momentum vector of the Solar System. At present the ecliptic is inclined by 1°.58 to the invariable plane.invariable plane[in′ver·ē·ə·bəl ′plān] |
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