单词：photoemissive device
单词：photoemissive device 相关文章
Broadcast: Jan 15, 2003 By Jerilyn Watson This is the VOA Special English Health Report. Many millions of people around the world suffer from problems of the small intestine. Bleeding from abnormal gr
VOA2003（上）-健康资讯
Beginners. It's that time of year again. I find myself rushing around with lists of things to do. I need to get the Christmas cards written and sent out to my list of friends and family. This year, we decided to send a family photo, which is what a l
英语博客 A cup of English
Scientists know all about the therapeutics qualities of blue and red light. But until know, sufferers of acne have to go to hospital to benefit from it. But Lumie, the manufactures of this new LED device hope it would see light therapy moving to the
英语杂谈
Device Keeps Internet On When Power Goes Off Erik Hersman and his team in Nairobi have created what they say is the first router made especially for Africa. It's battery powered and rugged. And it's gaining attention in Europe and the United States.
VOA标准英语2013年(五月)
Dutch designer Daan Roosegaarde and his team have brought the world's largest anti-smog tower to tthe 2017 Summer Davos in Dalian. A photo taken on June 28, 2017 shows the Smog Free Tower displayed during the Summer Davos in Dalian, Liaoning Province
2017CRI中国国际广播电台
印度政府日前推出了一款世界上最便宜的笔记本电脑，售价仅为35美元。据印度人力资源开发部长介绍，这款低成本的触摸屏电脑的主要针对用户为学生，计算机的主板、芯片、处理器、内存和
阅读空间