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请以飞蝶是什么时候发明,是谁发明,怎样被发明的,用英语写一篇作文

作者:Anita 发布时间: 2022-01-17 20:13:29

简介:】关于飞碟设计与生产人类也并非不能实现,据传早在二战期间纳粹德国已经设计并制作试飞这种飞行器。 当然但这也只是传言,并没有被证实。 1940年末,纳粹德国成立了一个名为“爆破

关于飞碟设计与生产人类也并非不能实现,据传早在二战期间纳粹德国已经设计并制作试飞这种飞行器。 当然但这也只是传言,并没有被证实。 1940年末,纳粹德国成立了一个名为“爆破手研究室-13”的秘密机构,其任务是专门研究、制造秘密飞行器。该秘密机构收罗了第三帝国最杰出、最优秀的专家、工程师和试飞员等顶尖人才,在德国军方协助下,终于制造出了一种最先进的碟形飞行器——“别隆采圆盘”。 飞碟与飞机相比其主要优势有四: 1,采用圆盘式结构,各方向中心轴对称受力均匀,可实现任意方向转弯; 2,采用垂直起降方式,可任意对称分布发动机,可空悬停; 3,可安装多个发动机和多方向安装发动机,动力大; 4,侧面投影面积小,侧面雷达反射面积基本可以做到无反射状态,非常适合空战。 另外由于飞碟特殊的外形,还可以做为太空飞行器。 不明飞行物(Unknown Flying Object) We all know that we live in a complex world .Although the technics of the human beings are developing all the time , we still got so many unsolved problems. Among all of this puzzles , UFO is one of the most noticable things. Now as everybody knows ,UFO is what we call Unknown Flying Object for short.For a period of time ,once we mentioned UFO , we always communicate it with high-tech ,extra-terrestrials ,outter space culture and many other exciting things . There are a lot of witnesses around the world ,affirming that they chanced to have seen some strange things in the sky . However , most of them cannot hand in the credible evidence .That's a pity. With the long-term efforts of the ufologists , most of the incidents are finally considered as natural phenomenons or human conducts . Some so-called UFO is just a bird , a plane , a balloon or even a plastic bag . Until now ,we haven't found any clues on real extraterrestrial civilization or supernatural phenomenon .But we are willing to see , with the constant exertion of humanity,we will get more profound knowledge , we will get to realize the essence of the world.We have the faith!

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