固体火箭助推器

新西兰英语 685 Child booster seats in cars

New Zealand will change the law to make it compulsory for children up to the age of 7 to sit in a booster seat in a car. At the moment, the law says it is compulsory for children up to the age of 5. Doctors at Starship hospital, which is the Auckland

发表于:2018-12-31 / 阅读(47) / 评论(0)

新西兰英语

VOA慢速英语2016 NASA最强火箭测试成功火星之旅指日可待

NASA Successfully Tests New Rocket Engine NASA最强火箭测试成功火星之旅指日可待 The American space agency successfully tested a powerful new rocket engine this week in the desert of northern Utah. The rocket booster is meant to take a

发表于:2019-01-12 / 阅读(130) / 评论(0)

2016年VOA慢速英语(七)月

创造历史!SpaceX火箭发射回收成功

SpaceX Celebrates Historic Rocket Launch, Landing 创造历史!SpaceX火箭发射回收成功 And the safe landing is a big deal. It means that space travel could become a lot easier in the future. Normally rockets deliver their payload a satellite,

发表于:2019-01-12 / 阅读(39) / 评论(0)

2015年VOA慢速英语(十二)月

经济学人39:怎样建造时速1000英里的汽车

The land-speed record 地面速度记录 How to build a 1,000mph car 怎样建造时速1000英里的汽车 Hybrid rocketry will be used to drive faster than ever before 混合火箭技术将用于更快地驱动车辆 May 5th 2011 | from the print ed

发表于:2019-01-26 / 阅读(47) / 评论(0)

经济学人综合

SpaceX卫星运载火箭回收失败

SpaceX announced a successful satellite launch on Sunday but failed an attempted sea-landing of a rocket booster, missing a goal that has repeatedly eluded the grasp of the Los Angeles-based rocket company. 总部位于旧金山的火箭公司SpaceX上

发表于:2019-02-03 / 阅读(43) / 评论(0)

英语新闻

经济学人:中国商业航天 (1)

The first rockets were Chinese. In the 1230s the armies of the Song dynasty, 首批火箭出现在中国。十三世纪三十年代，宋朝军队 who were fighting Mongol invaders, started launching fire arrows propelled by gunpowder some 300 metres

发表于:2019-02-16 / 阅读(50) / 评论(0)

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amorphous silicon gemanium film