定位导航和授时(PNT)服务是国家安全、经济发展、国家基础设施与民众日常生活的重要保障。随着卫星导航系统的泛在应用,其已经成为......

The spatial distribution of chemical oxygen demand(COD)and total nitrogen(TN)yield from Qingdao are studied by comparing......

互联网在给人们带来无限生机的同时,它多年累积下的大量系统漏洞,也使网络世界面临着巨大的安全威胁.拒绝服务(Denial of Service)......

阐述了俄罗斯弹道导弹的性能和发展现状,分析并预测了俄罗斯弹道导弹未来发展趋势。...

Chronic eutrophication and turbidity are critical detrimental factors impacting coral reef ecosystems, adversely affecti......

Cyber has become a supposedly cheap first-strike weapon of political choice by potential adversaries in a milieu placing......