随着网络的迅速发展,网络的服务质量(QoS)保证成为当前网络研究的热点问题。主动队列管理和区分服务网的流量控制策略都是IPQoS的......

Gaps in compressors are generally unfavorable because they lead to energy loss.However,gaps on diffuser blades can broad......

目的 探讨支气管Dieulafoy病临床表现、诊断及治疗方法.方法 结合我院收治的1例支气管Dieulafoy病的临床资料及国内外文献报道的病......