半导体气体传感器

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Real-time information about whats happening in our bodies at the cellular level could be crucial for fighting cancer and other life-threatening conditi

发表于:2018-12-24 / 阅读(62) / 评论(0) 分类 Scientific American(十二)月

Broadcast: Feb 13, 2003 Demand for electricity is growing in Mexico, but the state-owned oil company, known as Pemex, is reducing the amount of natural gas it can provide for electrical generation. Th

发表于:2019-01-03 / 阅读(72) / 评论(0) 分类 VOA2003(上)-国际时讯

Russian-born Andre Geim and Konstantin Novoselov, both from Manchester University in Britain, won the prize for their groundbreaking experiments with graphene, a microscopic flake of carbon. The pair first extracted the super-thin flake from a piece

发表于:2019-01-14 / 阅读(40) / 评论(0) 分类 VOA标准英语2010年(十)月

seal n. 封铅,封条;印,图章;海豹v. 封盖,密闭 seam n. 缝,接缝,骨缝 解析:burst at the seams 胀破裂缝,过满,过于拥挤 come/fall/break apart at the seams 破裂,失败,崩溃 s

发表于:2019-02-03 / 阅读(40) / 评论(0) 分类 英文语法词汇

351. odd a. 奇特的,古怪的;奇数的 352. omit vt. 省略 353. opponent n. 敌手,对手 354. opportunity n. 机会,时机 355. orchestra n. 管弦乐队 356. semester n. 学期;半年 357. se

发表于:2019-02-03 / 阅读(211) / 评论(0) 分类 英文语法词汇

PC:个人计算机Personal Computer CPU:中央处理器Central Processing Unit CPU Fan:中央处理器的散热器(Fan) MB:主机板MotherBoard RAM:内存Random Access Memory,以PC-代号划分规格,如PC-133,PC-1066,PC-2700 HDD:硬

发表于:2019-02-18 / 阅读(74) / 评论(0) 分类 实用英语