大气扩散模式

Scientists have created a climate model that they say proves human activity is responsible for global warming not only at the North Pole, but at the South Pole as well. The model includes data from Antarctica about which relatively little is known.

发表于:2018-12-08 / 阅读(30) / 评论(0) 分类 VOA标准英语2008年(十月)

现代科技提升天气预报精准度 Severe storms that cause heavy damage throughout the world are a reminder of how important it is to be able to predict the weather. A meteorological exhibition in Brussels earlier this month featured the latest

发表于:2018-12-19 / 阅读(30) / 评论(0) 分类 VOA双语新闻 2014年10月

Broadcast: Apr 09, 2003 Two U.S. astronauts took a spacewalk Tuesday to perform exterior maintenance on the International Space Station. It was the last opportunity to fix hardware while the outpost h

发表于:2019-01-03 / 阅读(101) / 评论(0) 分类 VOA2003(上)-科技先知

Digital Access Protocol(DAP) 数 字 访 问 协 议 Digital Volt Meter(DVM) 数 字 电 压 表 Digital TeleVision(DTV) 数 字 电 视 digital circuit 数 字 电 路 digital 数 字 的 data safety

发表于:2019-01-03 / 阅读(40) / 评论(0) 分类 电信英语

Direct Inward Dialing (DID) DID is PBX-to-central office trunks that allow incoming calls to a PBX to ring specific stations without attendant assistance. DID greatly reduces the number of required co

发表于:2019-01-03 / 阅读(46) / 评论(0) 分类 电信英语

By David McAlary Washington 07 March 2006 NCAR scientists Mausumi Dikpati (left), Peter Gilman, and Giuliana de Toma examine results from a new computer model of solar dynamics Researchers predict tha

发表于:2019-02-04 / 阅读(65) / 评论(0) 分类 2006年VOA标准英语(三月)