单词：upper critical Mach number
单词：upper critical Mach number 相关文章
NASA Successfully Tests Hypersonic 1 Jet Three years after its first test flight ended in an explosion, NASA on March 27 successfully launched an experimental jet that the agency believes reached a re
英语沙龙2004全年合辑下
Situation Critical 十万火急 by Kevin Lustig In some jobs, danger can appear at any moment. In the blink of an eye, the routine can become perilous. This month, the National Geographic Channel shows us what happens when a normal situation becomes
常春藤解析英语
Confidence,confident F: There are a number of important areas to consider for a branch office. M:we measure stability in government and economy. F: another critical area is business investment. M: You mean how much investment is going on in an area?
VOA 商务英语
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
40 years later, aero experts coined the term transonic. 40年后空气动力学专家创造了跨音速这个术语。 They debated, should it have one S or two? 他们争论这个术语应该用一个S，还是两个S? You see, they were having trou
TED演讲科技篇
Mother Machree There's a spot in my heart which no colleen may own; There's a depth in my soul never sounded or known; There's a place in my memory my life that you fill; No other can take it no one e
英语沙龙2004全年合辑上
Mother Machree 慈母颂 Theres a spot in my heart which no colleen may own; Theres a depth in my soul never sounded or known; 在我心中有那么一隅， 任何少女也不能占据。 它埋在我灵魂的深处， 我从不声张从不表露。
晨读英语美文60篇
Four Young People Who Make the World Better 四个年轻人致力于让世界更美好 What can technology do to make your world better? Four young people are starting new businesses to answer that question. Mateusz Mach Eighteen-year-old Mateusz Mac
2016年VOA慢速英语(三)月
Young Technology Expert Works to Stop Car Thefts Kenya is East Africas largest economy. Its capital Nairobi is growing quickly. But so is the citys crime rate -- the Nairobi Metropolitan Crime Observatory says thieves steal an average of 10 cars each
2014年VOA慢速英语(十一)月
MICHEL MARTIN, HOST: It's no secret that corruption is widespread in Kenya. But recently, the conversation about it got real when a bus driver confronted the police and the president with a story of bribery on national television. NPR's Eyder Peralta
2017年NPR美国国家公共电台2月
STEVE INSKEEP, HOST: The United States Supreme Court is busy this week with a ninth justice, Neil Gorsuch, on the bench. Today, the court hears arguments in a Missouri case with the potential to open state coffers for aid to parochial schools. Like M
2017年NPR美国国家公共电台4月
2010年3月8日是三八妇女节，给自己的母亲或者女性朋友送上一首英语诗歌-《慈母颂》作为祝福，给她们一个意外的惊喜和慰问吧。为大家收集了几首 英语诗歌祝福语，祝福全天下的女性朋友们
实用英语
Expedite climb to FL190. 21.加速上升到高度190。 Climb to FL280 expedite until passing FL180. 22.上升到高度280，快速通过高度180。 Unable to expedite climb due weight. 23.由于重量原因不能加速上升。 Descending immediate
飞行员英语900句
By Naomi Martig Hong Kong 28 November 2007 Japan's upper house of parliament has approved a bill that would stop the country's air force transport mission in Iraq. It is the latest clash between the opposition party and the government over Japan's ro
VOA常速英语2007年（十一月）
Before we take this giant leap, we need to be able to carry everything needed for a three-year -round trip with us. This is a much larger effort than getting to the moon. Its the Apollo mission on steroids. At this point we know at least as much as t
自然百科2012年
A Christmas survey showed that men spend more time looking for gifts for their bosses than for their wives, but women spend more time shopping for their pets than their spouses. This wouldn't happen if spouses remembered the truth. Your wife is the b
趣味英语
今天我们要学的习惯用语有共同的关键词: lip。大家都知道lip是嘴唇。嘴唇可是我们身上忙碌的器官，我们说话，吃喝都得靠嘴唇帮忙。嘴唇还帮我们传情达意。难怪由lip这个词发展而来的习惯
美国习惯用语
GWEN IFILL: After serving in Iraq and Afghanistan, many veterans face an uphill battle finding work in civilian life. There's been an increase in efforts to help ease their transition, but one segment of the veteran population is often overlooked. Sp
PBS访谈社会系列
CAIRO, Jan. 29 (Xinhua) -- The polling stations of Egypt's Shura Council (upper house of parliament) elections closed Sunday on the first day of the two-day vote with a low turnout rate of voters. In the first stage of the upper house elections, vote
英语新闻
At least the names for the two main possible culprits are entertaining: they are said to be either WIMPs (for Weakly Interacting Massive Particles, which is to say specks of invisible matter left over from the Big Bang) or MACHOs (for MAssive Compact
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