单词：hypersonic aerodynamics
单词：hypersonic aerodynamics 相关文章
And our first story concerns a weapon that said to be hypersonic, meaning it would travel at several times the speed of sound. Russia's defense ministry says it's conducted a successful test of a hypersonic missile. A nation might want to want a weap
CNN美国有线新闻2018年4月
But people won't decide to do it until they recognize the need for it, and that's the problem that we have right now. 但是直到人民意识到真正的需要，才会决定去做，这就是现在的问题所在。 So there's been plenty of people
TED演讲教育篇
That's an unnatural act for a rocket. 这对于火箭来说，不是一种自然的行为。 The third stage has a camera. 第三次发射，火箭上有一个摄像机。 We call it rocketcam. 我们称之为火箭摄像机。 And it's pointed at th
TED演讲科技篇
STEVE INSKEEP, HOST: President Trump's national security adviser, John Bolton, is in Moscow for a second day today. He's there to discuss President Trump's pledge to withdraw from an arms control treaty that bans certain kinds of missiles. This is on
2018年NPR美国国家公共电台10月
What do a hummingbird, a moth, and a maple tree have in common? They all use a similar trick to fly. Okay, okay, a maple tree doesnt fly. But its seeds kind of do. Maples make those little whirlybird seeds you see spiraling down in droves each sprin
60秒科学
Lockheed Martin says it's developing a Mach 6 aircraft that would be faster than any other fighter jet. 洛克希德马丁公司日前宣布，该公司正在研发一款速度可达6马赫、比其它所有飞机都快的战斗机。 Called the Hype
英语新闻
Lesson 356 I'm improving. 1.I'm improving.我好多了。 2.My work is improving.我的工作渐有起色。 3.My health is improving.我的健康善正在好转。 4.I'll improve it.我会加以改进。 5.I want to improve my English.我想提高英语
辛沛沛NO-BOOK 辛沛沛傻瓜机口语极短句
You know, most people in life major in minor things. That is, theyre focused on how to make a living instead of how to design their life. They get caught up in the day-to-day experiences that they make real important when actually, in the long term,
瞬间秒杀听力