[航] 直升飞机工程学

美国英语听力80篇3 Lesson46

[00:08.05]Igor Sikorsky left Russia at the start of the revolution in 1917. [00:15.54]He stayed for a while in Britain and France. [00:19.54]Then he went to the United States. [00:22.62]He arrived with little money and no real chances for work. [00:2

发表于:2018-12-26 / 阅读(57) / 评论(0)

美国英语听力80篇

EXPLORATIONS - Igor Sikorsky: Aircraft and Helicopter Design

EXPLORATIONS - Igor Sikorsky: Aircraft and Helicopter Designer By Marilyn Christiano Broadcast: Wednesday, July 06, 2005 (MUSIC) ANNOUNCER: Igor Sikorsky on the cover of Time magazine. Now, the VOA Sp

发表于:2019-01-07 / 阅读(59) / 评论(0)

Explorations

VOA常速英语2007年-US Military Helicopter Crashes in Northern Ital

By Sabina Castelfranco Rome 08 November 2007 A U.S. army helicopter has crashed in northern Italy, killing four people on board and injuring seven others. The causes of the crash are still unclear. For VOA, Sabina Castelfranco reports from Rome. In t

发表于:2019-01-08 / 阅读(28) / 评论(0)

VOA常速英语2007年（十一月）

EXPLORATIONS - Igor Sikorsky

EXPLORATIONS -March 27, 2002: Igor Sikorsky By Marilyn Rice Christiano ANNCR: Now, the VOA Special English program, EXPLORATIONS. Today Shirley Griffith and Steve Ember tell about Igor Sikorsky. He wa

发表于:2019-01-30 / 阅读(85) / 评论(0)

Explorations

Two killed in helicopter crash in central London

LONDON, Jan. 16 (Xinhua) -- Two people were killed and another two were injured after a helicopter crashed into a construction crane near Wandsworth Road, south of River Thames in central London earlier on Wednesday. Two people confirmed dead at scen

发表于:2019-02-08 / 阅读(73) / 评论(0)

英语新闻

First-aid Helicopter

A first aid helicopter embarked on a trial flight in Beijing yesterday. The aircraft will mainly be used for short-distance first-aid cases, and will be utilized during search and rescue missions. It will provide assistance for those who are lost in

发表于:2019-02-14 / 阅读(42) / 评论(0)

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-oncus

alder blight

aleurone cells of endosperm