A feasibility study was conducted for treating Guanting Reservoir inflow by using bio-filters.

进行了生物滤池系统在低温下对官厅水库入库水生物预处理可行性研究。

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Ultrasonic vibration technology was used to extract loosely sorbed phosphorus fraction in the sediments from Guanting Reservoir.

用超声技术提取沉积物样品中松散结合态磷，并与振荡提取结果进行比较。

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The Guanting Reservoir quit the drinkable water supply system of Beijing in 1997 due to the seriously pollution at its upper reaches.

由于上游河道污染严重，官厅水库于1997年退出北京市饮用水供水体系。

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Guanting Wind Farm security supervisor Zong Minqiang says all the power produced on the farm makes up one-tenth of Beijing's electricity needs.

VOA: standard.2010.08.03

The Guanting Wind Farm in Beijing has installed capacity of 64.5 megawatts and has supplied 35 million kilowatts of electricity to Beijing so far.

CNN: U.S., China lead way in tapping wind power