Barometric price leadership is distinguished by change in the identity of the leader.晴雨表式价格领导的特点是决定于价格领导者身份的变化.A barometric altimeter indicates height above sea level or some other selected elevation.气压高度表用以指示海平面或另外某个被选定...
被狗咬后，不管伤口多小，都必须立即就医。Any dog bite, no matter how small, needs immediate medical attention.病人大多数是在他们的全科医生建议下转往医院就医。Patients are mostly referred to hospital by their general practitioners.如果停止治疗后你感觉有任何异常症状，要即刻就医。If you expe...
通过实例探讨了正反馈在放大电路中的应用.This paper discusses the application of positive feedback in amplifiers.正反馈放大器是信号级 脉冲形成电路 的基础.Amplifiers with positive feedback are the bases of signal - grade pulse - forming circuits .这种控制方法虽然是有效的, ...