单词：water pretreatment
单词：water pretreatment 相关文章
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
2007年VOA标准英语（九月）
This is the VOA Special English Development Report. More than one billion people around the world do not have clean drinking water. Their water supplies are unsafe because of natural or man-made pollution, such as industrial chemicals or human and a
VOA慢速英语2007年（九）月
Health Report - How Early Treatment Can Limit the Spread of HIV This is the VOA Special English Health Report. For people infected with HIV, the earlier they start treatment, the better -- and better not just for them. A new study shows that early tr
2011年VOA慢速英语(五)月
Refugee Camps Spread Life-Threatening Diseases At a crowded camp in South Sudan, where thousands have come to escape the region's military conflict, officials report that an outbreak of Hepatitis E - a viral infection transmitted by contaminated food
VOA标准英语2012年(九月)
DEVELOPMENT REPORT - A Small Packet of Chemicals, a Big Effect on Dirty WaterBy Jill Moss Broadcast: Monday, April 03, 2006 I'm Steve Ember with the VOA Special English Development Report. Scientists
2006年慢速英语（四）月
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
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