牛頓 niúdùn Newton Origin Definitions Defs Strokes Stroke Words Sentences Sents 牛顿力学 niúdùnlìxué Newtonian mechanics Newtonian mechanics; classical mechanics based on the laws of motion and gravitation defined by Sir Isaac Newton牛顿米 niúdùnmǐ newton-meter newton-meter; a unit of torque or energy