平均失效间隔时间, 产生错误的平均时间,平均存活时间, 故障前平均时间, 故障前平均时间;产生错误的平均时间;平均存活时间

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(59) / 评论(0) 分类 Scientific American(一)月

第20期:At the Bus Terminal 在公交车总站 X:What are you waiting for?Get on that bus quickly. X:你在等什么呢?快点上车。 Y:But where do I get a ticket? Y:我去哪儿买票啊? X:On the bus.The driver collects the dares.YouII have to

发表于:2018-12-26 / 阅读(75) / 评论(0) 分类 出国旅游口语一本通

Many people had to wait around in the airport for a long time London Heathrow is the biggest airport in the UK, and it also handles more international passenger traffic than any other airport in the world. For this reason, expansion was planned and

发表于:2019-01-02 / 阅读(76) / 评论(0) 分类 Take Away English

Science and technology 科学技术 Creutzfeldt-Jakob disease 克雅氏病 Breaking down the barrier 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-c

发表于:2019-01-26 / 阅读(74) / 评论(0) 分类 经济学人科技系列

Science and Technology Creutzfeldt-Jakob disease Breaking down the barrier 科技 克雅氏病 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-cow dis

发表于:2019-01-26 / 阅读(61) / 评论(0) 分类 经济学人科技系列

1. There is no escaping this arctic blast hitting the U.S. Even those usually born in Miami had to put on jackets when they hit the beach. Residents in Auckland Miami are also complaining about cold snap with forecaster say it could linger into early

发表于:2019-02-07 / 阅读(141) / 评论(0) 分类 美联社新闻一分钟2010(一月)