【航天工程技术】混合式发动机

EXPLORATIONS -February 27, 2002: Fuel Cell Cars By Mario Ritter VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today we tell a

发表于:2019-01-02 / 阅读(68) / 评论(0) 分类 Explorations

Backup Motor May Save Pilots Lives 备用电机或可挽救飞行员的生命 In case of engine failure, multi-engine aircraft often have enough power to land safely, but single-engine planes have a very small chance of avoiding a fatal crash. Now, t

发表于:2019-01-14 / 阅读(102) / 评论(0) 分类 VOA标准英语2015年(七月)

Business 商业 Carmakers 汽车制造商 Revenge of the petrolheads 燃油车赢得先机 Fossil-fuel cars are getting much cleaner, making life hard for green ones 燃油汽车越来越环保了,环保汽车日子难过了 THE Chevrolet Volt, a c

发表于:2019-01-26 / 阅读(61) / 评论(0) 分类 经济学人商业系列

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) 分类 经济学人综合

Science and technology 科学技术 Reusable spacecraft 可重复使用的航天器 Jet-set rocket-man 乘喷气式火箭的乘客 A small British firm is working on a nifty new jet-rocket hybrid engine 英国一家小公司正在研发一款轻巧的新

发表于:2019-02-05 / 阅读(31) / 评论(0) 分类 经济学人科技系列

Business 商业报道 Carmakers 汽车制造商 Revenge of the petrolheads 燃油车赢得先机 Fossil-fuel cars are getting much cleaner, making life hard for green ones 燃油汽车越来越环保了,环保汽车日子难过了 THE Chevrolet Vol

发表于:2019-02-16 / 阅读(32) / 评论(0) 分类 经济学人商业系列
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