单词:ion exchange water treatment
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Words and Their Stories: Water Expressions 词汇典故:和Water相关的表达 Now, the VOA Special English program WORDS AND THEIR STORIES. 现在是美国之音慢速英语词汇典故节目。 Expressions about water are almost as common as wat
By Brian Padden Irbil, Iraq 27 September 2007 Recent outbreaks of cholera in parts of Iraq highlight the need for basic services like clean water.Development projects in much of the country have been delayed because of the deteriorating security situ
Occupy Wall Street Protesters Hold 'Day of Action' Two days after a court ruling closed the Occupy Wall Street encampment in New York, the protesters held a Day of Action -- not only in New York but other cities across the nation Thursday. The protes
Venezuelan Election is Again Choice Between Socialism, Capitalism Business has not been good for Rotzen Villabon, who owns a gift shop called Viqiu. He needs dollars to import products made in China but he can't find any at the official exchange rate
By Steve Herman Tokyo 14 November 2006 In the wake of a United Nations' report last week that declared a world water crisis, concerned Asian leaders are planning concerted action to deal with the lack of clean water in their region. ---- Japan on Tu
Ecolab Inc., an American global provider of clean energy technologies and services, has made great progress on helping industries in China to produce their goods with less water consumption. Those industries include dairy plants, food industries, ste