gravitational force
引力, 重力, 地心吸力
例句与用法：
A mare on the moon having rock of greater density than that of the surrounding area, thus exerting a slightly higher gravitational force.
质量密集月球上的阴暗部，其内部岩石比周围地区的岩石的密度大，因此产生略大些的引力
词形变化：
形容词: gravitational | 副词: gravitationally |