放大器自激振荡的频率就取决于流体的速度.Amplifier self - oscillates at a frequency depending on the velocity of the fluid.我们从经验观点来介绍运算放大器.We will approach the op - amp from an empirical point of view.它是三极管放大器的等效电路.It is the equivalent circu...
He then held the man in an armlock until police arrived.然后他反扭住那名男子的手臂让他动弹不得，直到警察赶到。This will mean more remand prisoners being held in police cells.这将意味着更多候审犯人会被拘押在警局拘留室。The election was held six months ahead of schedule....