adj.重力的；引力作用的
It is a spontaneous gravitational instability. 原因在于其自發(fā)的重力不穩(wěn)定性。
They are likely sources of gravitational waves. 它們很有可能就是引力波源。
Properties of space must depend on the gravitational potential. 空間性質(zhì)一定與引力勢有關(guān)。
