单词：propeller efficiency
单词：propeller efficiency 相关文章
France's Finance Minister Christine Legarde will become the first woman to lead the International Monetary Fund. She was elected today with the backing of the world's major economies. The changes at the IMF come during tumultuous times for the organi
2011年NPR美国国家公共电台6月
[00:04.57]Excitement fills the early morning air as you arrive at learn to recognize and name each part of the parachute. [00:19.17]You also learn what each part does. [00:22.05]The excitement builds as your teacher describes each stetp it of the jum
美国英语听力80篇
[00:37.28]21 knots, sir. 时速二十一节，长官 [00:46.40]Hey, look, look, look! Look, look! 快看 [00:51.44]See it? 看到没 [00:54.60]There's another one. See him? 又来一只，看到没？ [01:07.56]Look at that one. Look at him jump! 看，
听电影学英语—泰坦尼克号
[00:07.58]Igor Sikorsky was born in the city of Kiev, Russia; on May 25, 1889. [00:16.12]His mother was a doctor. [00:15.12]His father was a professor of psychology. [00:18.59]Igor became interested in science when he was very young. [00:23.82]He was
美国英语听力80篇
Aviation Day is on August the 19th. It is a day to celebrate the development and importance of aviation in the world. The holiday started in 1939. President Franklin Roosevelt decided the anniversary of Orville Wright's birthday should be National Av
英语课程学习计划和讲义
TEST 3 Listen carefully to the conversations and short passages [00:07.99]and choose the best answer to each of the questions. [00:13.56]1.A)She is pitiful. B)She is too shy to apply. [00:33.41]C)They are afraid of her. D)She is intelligent. [00:41.2
英语六级听力练习集锦
A robot entered a damaged reactor at Japan's Fukushima nuclear plant this week to take pictures of the reactor destroyed by an earthquake and tsunami in 2011. The robot, nicknamed 'The Little Sunfish,' is very small about the size of a loaf of bread.
2017年VOA慢速英语(七)月
Agriculture Report - Improving 'Feed Efficiency' in Cattle 农业报道 - 提高牛的饲养效率 From VOA Learning English, this is the Agriculture Report in Special English. 这里是美国之音慢速英语农业报道。 Animal feed is the bigge
2012年VOA慢速英语(十一)月
CHRISTOPHER BOOKER: Every night, usually somewhere between dinner time and putting her children to bed, Louisville nurse Dawn Sirek reaches for her inhaler. DAWN SIREK: It's really simple and that's it. CHRISTOPHER BOOKER: On good days, this is only
PBS访谈健康系列
Even an Epsilon Lenina suddenly remembered an occasion when, as a little girl at school, 即使是爱扑塞隆列宁娜想起了一件事。那时她还是小姑娘，还在学校里读书。 she had woken up in the middle of the night and become awa
美丽新世界
Like the vague torsos of fabulous athletes, huge fleshy clouds lolled on the blue air above their heads. 他们头上是巨大蓬松的云朵，有如几个神话力土的模糊的胴体垂在蔚蓝的空中，或是高耸在他们头上。 Out of on
美丽新世界
9月22-25日，习近平主席即将对美国进行国事访问，中美双边投资协定谈判将成为此行亮点之一。 请看《中国日报》报道： Negotiations on the China-United States Bilateral Investment Treaty (BIT) will make up mo
英文语法词汇
Finally, the long-awaited flying car is almost here. 终于，人们期待已久的飞行汽车就要面世了。 AeroMobil, a Slovakian company, plans to start selling its creation, the AeroMobil 3.0, in 2017. 斯洛伐克公司AeroMobil计划在201
英语新闻
By Mike O'Sullivan Los Angeles 16 November 2007 Auto makers who are showcasing their latest models at the Los Angeles auto show are expanding product lines in the hope of staying competitive in a changing market. Mike O'Sullivan reports, carmakers fr
VOA常速英语2007年（十一月）
ROME, Feb. 2 (Xinhua) -- Sixteen people were injured in an accident at Rome's Fiumicino airport on Saturday night when an ATR 72 aircraft went off the runway during landing. Two of the injured were in serious conditions, according to AGI news agency.
英语新闻
Science and technology 科学技术 Marine technology 船舶技术 A voyage of discovery 探索未知之旅 New technology can make ships more versatile, more efficient and cleaner, too 新技术使轮船更万能、更高效、也更环保 IN THE da
经济学人科技系列
Science and technology 科学技术 Solar-powered aircraft 太阳能飞机 The Wright stuff? 莱特附体？ An enthusiastic inventor hopes to sell sun-powered planes 一位希望出售太阳能飞机的痴狂发明家 THERE is something of the 19th
经济学人科技系列
Personalised news 个性化报刊 Your digital paper, sir 先生，您的电子报纸 The struggle to make money out of news on tablets 数字媒体平台的生财之道 1.A CUSTOMISED, constantly-updating newspaper used to be the stuff of science fi
经济学人综合