古时候,人们总是想把一些探测器送上太空。不过,功能单一,并不能完成人们对太空的探索。于是,人们开始想办法:怎么让人上天!我们这次采用的是“长征二号火箭”和“神舟十二号飞船”组成。
上一次太空,要花费很多钱,如果只上去三四个小时又觉得不划算,我们想建一个像酒店一样能让宇航员住的地方,就是空间站。
按照计划,空间站一共由五个部分组成:第一个是“载人飞船”,主要接送宇航员;第二个是“问天实验舱”,是用来做一些地球上完成不了的实验;第三个是“梦天实验舱”,和“问天实验舱”差不多,也是用来做实验的;第四个是“天和核心舱”,我们国家的宇航员就是住在这里面;第五个就是“货运飞船”,主要是负责运送各种物资的。不过,这个计划还没完全完成,现在的空间站只有两个部分:“天和核心舱”和“运货飞船”。据说,在2022年的时候,空间站就能补齐了。
传说有个广寒宫,是在月球上的,而咱们的空间站是飘在太空里的。太阳每天都会朝地球放射“能量”,不过我们在地球上晒太阳时,太阳离我们较远,危险不大。宇航员在太空中晒多了太阳可能会得癌症,所以规定空间站不能高于地球1000千米。科学家们在考虑到经费、实验效果等各种因素,最终,把空间站定在了离地球400千米的太空。
在地球上,你扔的东西都会掉到地上,这就是牛顿提出的“万有引力”。如果,我们站在平地上扔东西,就会下落;那要是我们把飞船以非常快的速度“丢”上去,它下落的程度,就和地球的弧度保持一致,那飞船就可以沿着地球飞了。空间站飞得很快,一个半小时就能转地球一圈。
从古至今,人来想要在地球上看整片天那是不行的。如果从空间站上就看的一清二楚,因为站得高,看得远。
太空环境下能做一些地球上做不了的实验,比如说找出一些比手机芯片更紧密的芯片,或是一些环境下能变色的东西。
这次的宇航员上太空主要有几个小目标:住上三个月左右;调试一下各种设备;做一些不可思议的实验;出舱看太空和空间站的全貌。
中国的空间站,让我们能探索太空更多的奥秘。
今天凌晨,长征二号F遥十三运载火箭在酒泉运载着神舟十三号飞船点火升空,搭载着3名航天员如利箭般刺破苍穹,飞向太空。这是我国载人航天工程的又一次重大成功,是我国空间站建设的“关键之战”,青岛科技一如既往地提供了护航技术支撑。
早在此次任务发射前期,中国电科22所的信息保障团队就已全面进入工作状态。一方面,这支团队全力为此次任务提供了空间电波环境态势和异常事件预报预警信息,为发射窗口的确定提供了技术支持;另一方面,团队还为任务系统提供了高精度电波环境效应数据,保障航天测控、卫星通信和空间目标监视雷达等系统的可靠运行。由中国电科22所研发的便携式定向仪、陆用型信标机、海用型信标机、航天员通话电台等设备齐“上阵”,组成了一张近、中、远程搭配,海、陆、空协同的立体化搜索救生网络。这套多次为我国航天任务发射提供保障的“明星装备”再次为神舟十三号的顺利出征提供了坚强护航。
“复杂网络与可视化研究所航天可视化团队研制的深空探测实时三维可视化技术,在本次飞行任务中再次接受了实战任务考验。”团队博士郭阳告诉记者,飞船在空间飞行状态是难以被直接观测到的,该技术可将飞船飞行过程中产生的海量数据在0.1秒内进行“实时翻译”,驱动控制中心屏幕上的飞船模型调整位置与姿态,让地面控制人员可以在第一时间看到飞船“实况”。“这项技术就像飞船的‘眼睛’,让它保持更好的姿态运行。”郭阳表示,航天可视化团队为神舟十三号载人飞船在此次“太空出差”提供轨道修正、姿态调整以及飞行控制与指挥提供关键技术支持和工程保障,团队研制的深空探测实时三维可视化技术在神舟十三号飞船和天和核心舱进行自主交会对接任务中发挥关键作用,并为神舟十三号飞船在轨飞行保驾护航。
“团队研制的深空探测实时三维可视化技术在执行交会对接任务中,已经助力中国航天事业10余年,已成为北京航天飞行控制中心常态化任务执行系统。”据郭阳介绍,该团队早在2011年萤火一号火星探测器发射任务中就已经作为任务全过程的推演平台,曾先后参与并圆满完成多项国家重大载人航天、探月工程以及深空探测等工程实战任务,主要包括天问一号火星探测,探月工程嫦娥二号、嫦娥三号、嫦娥五号T1飞行试验器、嫦娥四号以及嫦娥五号任务的可视化飞行控制指挥与遥操作操控任务,载人航天工程天宫一号与神舟八号、神舟九号、神舟十号,天宫二号与神舟十一号、天舟一号,空间站天和核心舱与神舟十二号、天舟二号交会对接任务的实时三维可视化飞行控制与指挥任务。
振奋人心的那一刻,航天员翟志刚、王亚平、叶光富先后进入天和核心舱,后续将按计划开展相关工作。
我国高科技发展突飞猛进,神舟七号发射成功,5G互联网研究与产业化获得重大突破,我国"首条国际一流水平的高速铁路在京津两大城市间开通,"首个中国人基因组序列研究成果发表,"北京正负电子对撞机重大改造工程建设任务圆满完成,"曙光5000A跻身世界超级计算机前十。
蛟龙深潜,嫦娥探月。我国科技实力不断进步。重大科技成果持续涌现,科技创新日趋活跃,为经济高质量发展注入了新的活力。
千年梦想,今朝实现。去年7月23日,天问一号在文昌航天发射场由长征五号遥四运载火箭发射升空,成功进入预定轨道。天问一号于2021年2月到达火星,实施火星捕获。2021年5月择机实施降轨,着陆巡视器与环绕器分离,软着陆火星表面,火星车驶离着陆平台,开展巡视探测等工作,对火星的表面形貌、土壤特性、物质成分、水冰、大气、电离层、磁场等科学探测,实现中国在深空探测领域的技术跨越[5]。深空探测将推动空间科学、空间技术、空间应用全面发展,为服务国家发展大局和增进人类福祉作出更大贡献。
截至2021年2月3日,“天问一号”探测器总飞行里程已超过4.5亿公里,距地球约1.7亿公里。
我们正站在“两个一百年”的历史交汇点,全面建设社会主义现代化国家新征程即将开启。征途漫漫,惟有奋斗。我们通过奋斗,披荆斩棘,走过了万水千山。我们还要继续奋斗,勇往直前,创造更加灿烂的辉煌!
神舟十三号的航天员按计划将在轨驻留6个月,在这6个月时间,主要工作是要进一步验证空间站建造和运营的关键技术。具体来讲,就是要和核心舱、天舟二号、天舟三号一起配合进一步验证。
科技强,则国强。自信之路成功,为中国航天点赞。神舟十三号载人飞船发射取得圆满成功,又一次让我们感受到祖国的强大。
今年的寒假是个不平凡的寒假。由于新型冠状病毒,开学时间延迟。为了保证教学工作的正常进行,学校开展了网络课程。今天是网上教学的第四天,同学们都慢慢适应了这种新颖的教学方法,也没有因为老师的监督而松懈了自己的学习,在课上积极回答老师的问题,认真听讲,课后也按时完成自己的作业。而成为“主播”的老师们轮流完成各门学科的'授课,上课很积极,课件准备的很用心,知识点也总结的很到位。我感觉这次网上教学的方法,即能保护同学和老师的安全,又能进一步激发同学们学习的兴趣,从而提高学习的效率。
This years winter vacation is an extraordinary one. Due to the novel coronavirus, the school hours are delayed. In order to ensure the normal progress of teaching, the school launched the network course. Today is the fourth day of online teaching. The students have gradually adapted to this new teaching method, and have not slackened their study due to the supervision of the teacher. They actively answer the teachers questions in class, listen carefully, and finish their homework on time after class. The teachers who become the "anchor" take turns to complete the teaching of various subjects. They are very active in class, attentive in courseware preparation and in place in knowledge summary. I feel that this online teaching method can not only protect the safety of students and teachers, but also further stimulate students interest in learning, so as to improve the efficiency of learning.
2020年春节,一场新型冠状病毒引发的肺炎疫情笼罩了中华大地。人们开始足不出户,生活变得压抑起来。在这样的背景下,教育部发布通知“停课不停学”,正式开辟了一种崭新的学习方式,网上授课。
A novel coronavirus epidemic caused by pneumonia in 2020 was enveloped in China. People began to stay indoors and life became oppressive. In this context, the Ministry of Education issued a notice of "no suspension of classes", officially opening up a new way of learning, online teaching.
每天在钉钉直播群里上课,我认为这种教学方式变得生动活泼,我的学习兴趣也提升了许多。老师们每节课在直播间里以课件的形式向我们授课,整节课的知识框架变得清晰明朗了起来,这是十分有利于我们接受并消化东西的。
Every day in nail live group classes, I think this teaching method has become lively, my interest in learning has also increased a lot. Teachers teach each lesson to us in the form of courseware in the live room. The knowledge framework of the whole lesson becomes clear and clear, which is very conducive to our acceptance and digestion.
其次,就是这种方式突破了原有的教学模式。在学校是每一个学科只有一个老师授课,但在网上授课则是许多不同的老师担任我们的任课老师,使我们能充分了解到不同老师的教学风格和特点,进而可以得知自己感兴趣的教学方式。
Secondly, this way has broken through the original teaching mode. In school, there is only one teacher for each subject, but in online teaching, many different teachers are our teachers, so that we can fully understand the teaching styles and characteristics of different teachers, and then we can know the teaching methods we are interested in.
再者,在网上授课时,每个老师一天只需上一节课或两节课,这就为老师们挤出了充足的时间为同学们批改作业及写评语,可以使同学们了解到自己作业的不足和突出的地方,之后就知道我们可以向哪一个方向努力。
Moreover, in online teaching, each teacher only needs to have one or two classes a day, which makes the teachers have enough time to grade and write comments for the students, so that the students can understand the shortcomings and highlights of their own work, and then know which direction we can work in.
总而言之,我们在这足不出户的冬日勃发着学习的兴趣。“冬天来了,春天还会远吗?”我相信,只要我们认真进行网上学习,永远保持着学习的自信,总有一缕阳光,会突破疫情的阴霾,带来温暖的春天。待到春暖花开时,我们再聚校园。
All in all, we are interested in learning in this winter. "If winter comes, will spring be far behind?" I believe that as long as we carefully carry out online learning and always maintain our confidence in learning, there will always be a ray of sunshine, which will break through the haze of the epidemic and bring warm spring. When spring comes, we will get together on campus.
网课,是疫情时美丽的流行;关怀,是生活中永恒的经典。——题记
E-learning is a beautiful epidemic in the epidemic; caring is an eternal classic in life. ——Inscription
疫情的肆虐使今年的.寒假出奇地漫长。为了让我们“停课不停学”,老师们都摇身变成了“主播”或线上“客服”。一时间,网课成了美丽的流行,而老师们隔空的帮助让学生觉得这个寒假不太冷。
This years winter vacation is surprisingly long because of the epidemic. In order to let us "stop classes and never stop learning", teachers have become "anchor" or "customer service" online. For a while, online classes became a beautiful fashion, and the teachers help in the gap made students feel that this winter vacation was not too cold.
网课之初,我们学生大部分还可以管控好自己。可“路遥知马力,日久见人心”,有些同学渐渐显示出了本色,私底下约定时间玩游戏、跟同学聊天,甚至忘记了上网课。可是你们知道吗,老师为了让我们“不停学”,费尽了心血。
At the beginning of online classes, most of our students were able to control themselves. However, some students have gradually shown their true colors. They have privately arranged time to play games, chat with their classmates, and even forget about online classes. But did you know that the teacher made great efforts to keep us going.
就说我们班的黄老师吧,每天傍晚,都要为我们准备第二天的所有学习任务清单。老师要先把视频课看一遍,如果效果不好,又会继续搜寻,一定要寻找到最好的学习资源,争取不给学生留下一丝漏洞和不好的体验。
Lets say that Mr. Huang in our class prepares a list of all the learning tasks for us every evening. The teacher should watch the video lesson first. If the effect is not good, he will continue to search. He must find the best learning resources to avoid leaving any loopholes and bad experience for the students.
接着随时监督学生的作业完成情况,那一份份电子作业发出去,每一次都收到写55份作业图片。是图片啊,你能想象得到,老师在屏幕上认真批改每个同学作业的情景吗?不仅有勾画圈点,还有批语呀。张同学哪个字写错了,李同学这个句子不通顺,王同学的字迹太潦草……老师都会一一批注,还经常出现鼓励性语言,为同学们加油,而且几乎不重复。
Then monitor the completion of the students homework at any time. When the electronic homework is sent out, 55 pictures of the homework are received each time. Its a picture. Can you imagine that the teacher carefully corrects each students homework on the screen? There are not only sketching circles, but also comments. Whats wrong with Zhang? Lis sentence is not smooth. Wangs handwriting is too scrawly Teachers will annotate one by one, and often use encouraging language to cheer students on, and almost no repetition.
那次小朱同学忘提交作业了,老师便马上用短信提醒,收到作业图片后,又马上批改,并督促订正。面对作业质量差、态度不认真的同学,老师还会进行电话家访。老师还会在百忙之中抽时间解答学生的疑问呢!
That time, Zhu forgot to submit his homework. The teacher immediately reminded him with a text message. After receiving the pictures, he immediately corrected them and urged them to correct them. In the face of the students with poor quality and not serious attitude, the teacher will also make a telephone home visit. The teacher will take time out of his busy schedule to answer the students questions!
那一次,我在学习文言文《掩耳盗铃》时遇到了困惑,便发了一条信息咨询老师。知道老师很忙,根本没指望老师马上能回复。可出乎意料,不到一分钟,竟然收到了老师的回复,回复中不仅有文字,还有查证的图片,最后还附上一段让我信心满怀的鼓励性话语:很高兴你能这么积极主动地钻研,老师为你的发现和大胆质疑叫好。以后学习上遇到有分歧的问题,不要迷信权威,只管大胆求证。为你的探究精神点赞!
That time, when I was learning the classical Chinese "hiding my ears and stealing the bell", I met with confusion and sent an information consultation to the teacher. Knowing that the teacher is very busy, I didnt expect the teacher to reply immediately. But unexpectedly, I received the teachers reply in less than a minute. There were not only words but also verified pictures in the reply. At the end of the reply, I also attached a piece of encouraging words that made me confident and full of confidence: Im glad that you can study so actively, and the teacher applauds your discovery and bold query. In the future, if you encounter different problems in your study, dont believe in authority, just dare to prove it. Praise your spirit of inquiry!
我不知道这次疫情还有多久才能结束,但网课却给我们的学习增添了新时代的快乐,已成为我成长中遇到的最美丽的流行;老师的付出和大爱,让我们的心通过互联网这根神秘的丝线,紧紧地联系在一起,那无微不至的关怀,已成为我生活中永恒的经典。
I dont know how long it will take for the epidemic to end, but online classes have added a new era of happiness to our learning, which has become the most beautiful fashion I have ever met in my growth. The teachers efforts and love have made our hearts closely linked through the mysterious thread of the Internet. That meticulous care has become an eternal classic in my life.
© 2022 xuexicn.net,All Rights Reserved.