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China's 110-meter radio telescope completes core structure installation_我的网站

A | AI摘要
福建启动防台风四级应急响应。 (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)
。第20号台风“简拉维”预计24日在闽近海消散,沿海有强风雨。第19号台风“沙德尔”或达超强台风级,路径待定。省防指要求加强防御,船只及时避风。

B | 北京8月22日电 记者从应急管理部获悉,今年第20号台风“简拉维”(热带风暴级)已于22日下午在西北太平洋洋面上生成,预计其将以每小时5至10公里的速度向偏西方向缓慢移动,强度变化不大。受其影响,未来三天,福建省将有大到暴雨,局地大暴雨。

C | 国家防总、应急管理部22日针对福建启动防汛防台风四级应急响应。 东南网8月23日讯(福建日报记者 何祖谋 刘志雄)针对今年第20号台风“简拉维”(热带风暴级),省防指22日15时启动防台风四级应急响应,省气象局22日15时启动重大气象灾害(台风)Ⅳ级应急响应。 据悉,“简拉维”22日19时中心位于台湾台北市东偏北方向约290公里(北纬26.3度、东经124.1度),预计将以每小时5~10公里的速度向偏西方向移动,强度先维持,后逐渐减弱,可能于24日在福建近海减弱消散。 22日傍晚到23日白天,闽外渔场最大风力达8~9级、阵风10~11级,钓鱼岛海域、闽东渔场最大风力达7~8级、阵风9~10级;沿海地区和南部地区有分散性大雨到暴雨,局部大暴雨,其余地区局部大雨到暴雨。 与此同时,今年第19号台风“沙德尔”持续增强,预计将达到超强台风级。目前来看,其后期路径存在不确定性。若25日至26日冷空气偏弱,副热带高压维持强势,将在台风北侧形成“大坝”效应,引导“沙德尔”西行登陆我国;若冷空气较强,副热带高压被击退,则台风将北上转向日本或韩国。

D | 25日之前,“沙德尔”对我国近海海域无影响,路径走向有待下周进一步明朗。 省防指要求,沿海各地各有关部门要密切关注台风动态,适时启动防台风应急响应,加强会商研判和组织调度,扎实做好防御工作。

E | 同时,相关区域航行或作业的船只注意及时回港避风或避开影响区域。 受季风辐合带影响,未来几天,我省降水会逐渐增多,强降水的落区也会由分散趋于集中,主要出现在沿海和南部地区。23日开始,全省大部最高气温均会降到33℃以下。
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Published on:09:19:56
