洞察号无人探测器捕获100次以上振动声音【亚博登录官方网站】

洛杉矶10月2日电(记者谭晶晶)美国宇宙局喷气前进实验室1日,洞察号无人探测器自去年11月登陆火星以来,捕获了100次以上振动的声音,其中21次火星如雷的可能性很高。由于该设备的灵敏度极高,除了火星如雷以外的许多杂音也不会受益,包括洞察号机械臂运动的声音、火星风音、地震仪本身的机械噪音等。

Hadoop是如何做的?【亚博登录官方网站】

There are countless open source projects with crazy names in the software world today, but the vast majority of them never make it onto enterprises’ collective radar. Hadoop is an exception of pachydermic proportions.如今的软件界具有数不清的开源项目,它们享有可怕的名字,但其中的大多数根本都没进过企业的法眼,只有Hadoop是个值得注意。

【亚博登录官方网站】双语科技百科(地理) 第27期:郑和下西洋

Envoy of Peace-Zheng He’s Great Voyages郑和下西洋In the early days of the Ming Dynasty,that is, early in the 15th century,China was an advanced country in the world,with a booming economy and prosperous culture. In order to strength the relations with countries lying to the west of China as well as to flaunt the national power of the Great Ming Empire,Em-peror Ming Chengzu launched a series of marine activities.Between 1405 and 1433,Zheng He was ordered seven times to ad as an en-voy to these countries,known as “Zheng He’s voyages to the west seas”,as the main activities were carried out in the west sea area of today’s Kalimantan Island,known as west seas in ancient times.15世纪初的明朝,国力衰弱,经济繁盛,文化兴旺。