头条推荐
一 | (ECNS) -- The core structure of a 110-meter radio telescope in Xinjiang has been installed, marking a major milestone for what will become one of the world’s most precise radio telescopes of its size, capable of conducting observations at high radio frequencies. Located in Qitai County, Xinjiang Uygur Autonomous Region , the telescope is built by China Electronics Technology Group Corporation (CETC). The completion of the antenna support structure has allowed the project to move into the installation of the elevation structure. Once completed, the telescope will support China’s deep-space exploration. Ma Wengang, a representative of the project, noted that the telescope’s main structure is designed to support a movable section weighing more than 3,000 metric tons and enable 360-degree rotation around the vertical axis. According to Xu Qian, chief engineer of the antenna system, the telescope will achieve arcsecond-level pointing accuracy after completion, roughly equivalent to spotting a ping-pong ball from 3.3 kilometers away. Construction of the 110-meter radio telescope began in September 2022. The main structure is expected to be completed in 2027, with the telescope scheduled to enter full operation in 2028. (By Liu Shuangjing, Zhang Dongfang)
。

二 | 近几个月来,一直有传闻法国政府要征收“奥运税”以应对举办奥运预算超支的问题,尽管总统马克龙已在近日否定了这一传闻,但依然无法打消各方对于奥运会花钱超支的担忧。巴黎奥运会的预算包括两部分——其中一部分约38.7亿欧元为巴黎奥组委的办赛费用,这笔费用的来源主要包括国际奥委会的补贴、商业赞助以及票务收入等;而另一部分大约有32亿欧元则交由一家名为奥运工程交付公司(SOLIDEO)的机构,负责奥运相关的场馆以及基础设施建设等。

三 | 目前来看,由于通货膨胀带来的人力及原材料价格的上涨,场馆和基础设施建设面临的预算超支问题将更为严峻。如何保证所有场馆及基础设施按期交付,同时又将支出成本控制在合理范围之内,将考验所有相关方的智慧。对于现代奥林匹克运动来说,巴黎是一座绕不开的城市,这里是现代奥林匹克之父顾拜旦的出生地,1900年、1924年这里曾两次举办过奥运会。百年之后,奥运再回“浪漫之都”,难免让人对这届奥运会有着非同寻常的期待。巴黎奥组委希望借助这次奥运会,向全世界展现巴黎丰厚的历史文化底蕴,正如巴黎奥组委主席埃斯坦盖所说,要将奥运融入巴黎的壮丽之中,而这也是那些天马行空的方案背后的灵感来源。理想很丰满,但现实很骨感。

四 | 对于巴黎奥组委甚至法国政府来说,接下来两年的筹办工作将充满挑战。

五 |
Current article:http://3ipsi.yuejinhuapennuochoudengying.cyou/list_nbj7xch/70sx.html
Published on:22:58:30