| 释义 |
impulse/ˈimpʌls/n. 1 the act or an instance of impelling; a push 推进；推动 2 an impetus 刺激，推动力 3 Physics 【物理学】a an indefinitely large force acting for a very short time but producing a finite change of momentum (e.g. the blow of a hammer) 冲力(如锤击) b the change of momentum produced by this or any force 冲量 4 a wave of excitation in a nerve 神经冲动 5 mental incitement 一时的念头 6 a sudden desire or tendency to act without reflection 冲动行为 did it on impulse 凭一时冲动而为之 [Latin impulsus (as IMPEL)] |