单词：pressure control system of spacecraft cabin
单词：pressure control system of spacecraft cabin 相关文章
Citizen-Scientists Take Control of Old Satellite 平民科学家控制旧卫星 For the first time, the American space agency has given control of one of its spacecraft to a team of citizen-scientists. The satellite was launched in 1978 and had not b
2014年VOA慢速英语(九)月
A Chinese astronaut has made the historic first step in outer space for his country. With the successful spacewalk, China has become the third country, after the United States and Russia, to do so. Stephanie Ho reports from Beijing. In this video gr
VOA标准英语2008年（九月）
By David McAlary Washington 16 May 2006 Long distance air travel can increase the risk of blood clots in the legs, a potentially fatal condition that has been known for more than half a century. Now B
2006年VOA标准英语（五月）
Question: What is the best exercise to control high blood pressure? 提问：控制血压的最佳锻炼方式是什么？ Answer: Take your pick, as the best exercise to control high blood pressure seems to be virtually any exercise, like walking or
阅读空间
When traveling by plane what makes our ears pop, and what is it exactly that pops? Most of us are familiar with this phenomenon of travel: it usually happens on takeoffs and landings. Our ears pop because of the change in air pressure as the plane as
英语听力文摘 English Digest
Traffic at our twelve oclock, 10 miles, climbing. Should we expedite our descent to cross altitudes? 601. 冲突飞机在我们12点钟方位，10海里处，正在上升。我们应该加速下降以穿越高度吗？ Unable, TCAS RA. 602. 不能，
飞行员英语900句