定律 (通過(guò)大量事實(shí)歸納而成的結(jié)論, 是客觀規(guī)律的表達(dá)形式之一) law 能量守衡定律 law of the conservation of energy; 萬(wàn)有引力定律 the law of universal gravitation; 物質(zhì)不滅定律 law of conservation [indestructibility] of matter; 物質(zhì)能量守衡定律 matter-energy equivalence