测量潘生丁药物负荷试验前后舒张期峰值血流速度及CVR值.Peak diastolic flow velocity and CVR before and during infusion of dipridamole were calculated.目的观察甲氰咪胍联合潘生丁治疗小儿病毒性腹泻的有效性与安全性.Objective To evaluate the effectivity and safety of child virus di...
The Frequency Shift Keying modulation is widely used in HF digital communication.移频键控是短波数字通信中常用的一种调制方式.Her sister carried with her most of the grimness of shift and toil.她姐姐身上还带着艰辛操劳的痕迹.Before deselecting shift the selec...