日韩色综合-日韩色中色-日韩色在线-日韩色哟哟-国产ts在线视频-国产suv精品一区二区69

手機(jī)APP下載

您現(xiàn)在的位置: 首頁 > 在線廣播 > 科學(xué)美國人 > 科學(xué)美國人健康系列 > 正文

科學(xué)美國人60秒:空軍追蹤最后邊界

來源:可可英語 編輯:aimee ?  可可英語APP下載 |  可可官方微信:ikekenet
 下載MP3到電腦  批量下載MP3和LRC到手機(jī)
加載中..
9Igzn5m.l.od

a7mc#Py^1Jr

This is Scientific American — 60-Second Science. I'm Steve Mirsky.
"There's three strategic trends that I see in space."
General Jay Raymond, Commander of Air Force Space Command in Colorado Springs. He recently visited Scientific American to talk about Space Command, which is responsible for space and cyber for the Air Force.
"One is space is congested...we track 23,000 objects in space. We provide the conjunction assessment warning, if you will, so for every object in space we do the analysis on every other object in space to see if there's a potential collision. And if there's a potential collision we make the warning for satellite operators around the world to maneuver their satellites to keep that collision from happening."
"I see the trends of that growing. If you look at the numbers of launches that are occurring, the numbers of launches are up largely because the cost of launch has gone down. So the access to space has gotten easier...not just are the numbers of launches going up, but the numbers of satellites on each launch are also increasing...and so I see that congestion just growing in the future, and that's something that we are obviously working to help mitigate that growing strain."

A8Xnnu@ig]7

衛(wèi)星1.jpg
"The other thing that's happening in space is that we are becoming more contested. I think it's clear that space is a war-fighting domain just like air, land and sea. And we are seeing threats across the spectrum, everything from low-end reversible jamming of GPS satellites all the way up to high-end kinetic destruction, which we saw in 2007 when China shot down their weather satellite."
"And then the last thing, and I wouldn't say it's concerning by any means, is the increased competitive nature of space. I think that's a good thing. I think there's some huge opportunities here to leverage a growing commercial space market...I think as costs of launch go down and as technology allows for smaller satellites I think we'll be able to leverage those for a wide variety of missions."
For Scientific American — 60-Second Science. I'm Steve Mirsky.

c@Pvk^dWVsCZ6_Ef,;H(

o+85LOS@VcNnvi1

E,rqahV|IPIOA!3GGkR&]),H!u.1d8P-8s(R

重點(diǎn)單詞   查看全部解釋    
destruction [di'strʌkʃən]

想一想再看

n. 破壞,毀滅,破壞者

聯(lián)想記憶
commercial [kə'mə:ʃəl]

想一想再看

adj. 商業(yè)的
n. 商業(yè)廣告

聯(lián)想記憶
conjunction [kən'dʒʌŋkʃən]

想一想再看

n. 連詞,結(jié)合,關(guān)聯(lián),(事件等的)同時(shí)發(fā)生

聯(lián)想記憶
spectrum ['spektrəm]

想一想再看

n. 光譜,范圍,系列

聯(lián)想記憶
mitigate ['miti.geit]

想一想再看

vt. 鎮(zhèn)靜,緩和,減輕

聯(lián)想記憶
variety [və'raiəti]

想一想再看

n. 多樣,種類,雜耍

 
commander [kə'mɑ:ndə]

想一想再看

n. 司令官,指揮官

 
strategic [strə'ti:dʒik]

想一想再看

adj. 戰(zhàn)略的,重要的,基本的

 
potential [pə'tenʃəl]

想一想再看

adj. 可能的,潛在的
n. 潛力,潛能

 
kinetic [kai'netik]

想一想再看

adj. 運(yùn)動(dòng)的,動(dòng)力學(xué)的

聯(lián)想記憶
?

關(guān)鍵字: 太空 科學(xué)美國人 空軍

最新文章

可可英語官方微信(微信號(hào):ikekenet)

每天向大家推送短小精悍的英語學(xué)習(xí)資料.

添加方式1.掃描上方可可官方微信二維碼。
添加方式2.搜索微信號(hào)ikekenet添加即可。
主站蜘蛛池模板: 高纤维食物一览表| 中国古代寓言阅读记录卡| 王妍个人资料简介| 赵琦| 男同视频在线| 江苏诗歌网| 《万万没想到》电影| 电影《村小的孩子》完整版| 金福南事件始末在线观看高清影评| 柳堡的故事演员表| 各各他的爱的歌谱| 拷打| 男生的帅气头像| 《波多野结衣电影| 大奉打更人电视剧在线观看全集免费播放| 青楼春凳打板子作文| 可可托海的牧羊人原唱歌曲| 希崎| 张绍荣| 又造句二年级上册| 视频污网站| 夫妻爱情视频| 10000个卫视频道| 美女mm| 英语书七年级下册单词表| 乡村女教师电影| 都市频道在线直播回放| 荒笛子简谱| 希比·布拉奇克| 1988年英国的白蛇传说| 太子传说| 男女瑟瑟视频| 周秀娜三级大尺度视频| 凤凰电视台| 人蛇大战 电影| 写现代诗| 王艺霏| 混沌行走| 胡蕾| 海洋之歌免费观看完整中文版| 自制化妆豆豆本|