能量守恒 néngliàngshǒuhéng conservation of energy Origin Definitions Defs Strokes Stroke Words Sentences Sents 能量 néngliàng noun energy energy in the physical sense, such as mechanical, electrical, or thermal energy; can be abbreviated as 能 néng守恒 守恆 shǒuhéng conservation The principle that a total value of a physical quantity remains constant during any process