单词：infiltration velocity
单词：infiltration velocity 相关文章
From NPR News in Washington, I'm Lakshmi Singh. Home prices across the US are at nine-year lows. The SP/Case-Shiller Home Price Index reveals a steep drop from February to March in 18 of the 20 big metro areas tracked. Patrick Newport, an economist w
2011年NPR美国国家公共电台6月
Ever wander through a supermarket and past the open refrigerated cases that house cream cheese, butter and OJ? The refrigerated shelves are protected by jets of air that blow across the front. These jets form an air shield to keep the warm air out. T
Scientific American(十一)月
By Lisa Schlein Geneva 26 May 2006 Sudanese refugee children sit in their makeshift classroom, Wednesday, April 19, 2006 in the refugee camp Kou Kou Angarana in Chad some 30 kilometers from the Sudan border The U.N. refugee agency says it is very di
2006年VOA标准英语（五月）
Europe Mafias on the move 欧洲 黑手党正在扩张 Northward creep 罪恶之手伸向北方 In Italy Mafia-organised crime is no longer only a southern phenomenon意大利黑手党犯罪不再局限于南部地区 TERRACINA is a sprawling town so
经济学人财经系列
JERUSALEM, March 12 (Xinhua) -- The United Nations High Commissioner for Refugees (UNHCR) joined a petition filed by human rights organizations to the Supreme Court against the Israeli law of infiltration and asked to revoke it, local media reported
英语新闻