kepler's law of planetary motion
英漢例句
- The Laws of Planetary Motion Kepler's First Law: The orbits of the planets are ellipses, with the Sun at one focus of the ellipse.
行星沿橢圓軌道繞太陽運(yùn)行，太陽位於橢圓的一個(gè)焦點(diǎn)上。 對任一個(gè)行星說，它的逕矢在相等的時(shí)間內(nèi)掃過相等的麪積。