"Ras al-Hekma: How the UAE-Egypt deal dumps the UN in choppy waters" ... On February 23, Reuters reported that Egypt and the United Arab Emirates concluded a $35 billion dealfor the development of Ras ...
HEC-RAS(Hydrologic Engineering Center's River Analysis System)是由美国陆军工程兵团水文工程中心开发的水力分析软件包,可以对自然或者人造河道进行一维二维水力计算分析,主要用于明渠河道水流分析和洪泛平原区域的确定。 其水力分析主要包括下面四个部分: 恒定 ...