impulses脉冲impulsen.冲动；心血来潮；神经冲动；[物]冲量；[电]脉冲vt.推动impulse reflection脉冲反射impulse modulation脉冲调制,脉冲灯impulse per second脉冲秒impulse purchasing冲动性购买impulse properties脉冲性impulse-register脉冲寄存器impulse road miler冲击压路机impulse signalling脉冲通信impulse tachometer脉冲测速计impulse air bottle发射空气瓶