单词law of areas
un.: 面积律
面积律
The second law, the law of areas, states that a line connecting a planet to the sun covers an equal area over equal periods of time.
开普勒第二定律,也即面积定律,指出从太阳到行星所联接的直线在相等时间内扫过同等的面积。
For satellites circling the earth, the law of areas is also imperfect .
对于环绕地球运动的卫星来说,面积定律也是不完善的。