您要查找的是不是:
- In this thesis,as an example watershed of Miyun reservoir,rural household toilet and dejecta are studied by first-hand investigation,questionnaire survey. 以北京市密云水库水源保护区为例,通过实地考察、访谈与问卷调查等方法,研究考察了当地农村厕所及人粪尿排污情况。
- The Character of Nutrient Loss and Land Use in A Small Watershed of Miyun Reservoir 密云水库小流域土地利用方式与氮磷流失规律
- watershed of Miyun reservoir 密云水库
- More trees will be planted in the upper reaches of Miyun reservoir and Huairou reservoir to nourish the water source and eliminate soil erosion. 完成密云、怀柔水库上游境内地区种植水源涵养林、水土流失治理等任务。
- Study on Affection of Water Resources Protection Forest to Water Quality of Miyun Reservoir in Beijing, China. 北京密云水库水源涵养林对水质的影响研究。
- A new dynamic way to analyze the flood control level of Miyun reservoir is presented in this paper. 摘要本文探讨一种新型的、动态的汛限水位控制方法,并以此方法对密云水库汛限水位进行计算分析。
- Climbing on the top of mountain you can command all of Miyun reservoir, islands and lakes. 这里登高山可俯瞰密云水库,千岛云湖尽收眼底,烟波浩淼之中众山皆小;
- Treating low temperature and low turbidity raw water of Miyun reservoir with GAC deep bed direct filtration,the turbidity, odor and color of effluent are very lo... 以直接过滤方式运行处理密云低温低浊水,效果理想,对浊度、色度和嗅味的去除效果显著,对有机物具有一定的去除作用。
- General tropic state index of PH, SD, TP, TN, BOD, COD and chla suggests that water body of Miyun Reservoir already belongs to middle nutrition and there is the tendency to eutrophicate. pH、透明度(SD)、总氮(TN)、总磷(TP)、生化需氧量(BOD)、化学需氧量(COD)、叶绿素a(chla)的营养状态指数综合评价表明,密云水库水体为中营养型,并且出现了向富营养发展的趋势。
- When was the watershed of this change? 她由盛而衰的分水岭是何年代?
- The impact of land use on soil texture in Shixia watershed of Miyun County, Beijing 密云石匣小流域土地利用对土壤粗化的影响
- Study of normal water level of Miyun Reservoir in Beijing 北京市密云水库汛限水位研究
- Peter: Shicheng is a town of Miyun? 彼得:石城是密云的一个镇?
- Peter: Which part of Miyun does it lie in? 彼得:它位于密云的什么地方?
- Study on Existent Form of Mercury in Sediments of Miyun Reservoir, Beijng 北京密云水库沉积物中汞的存在形式研究
- Three-dimensional water quality simulation technique of Miyun reservoir 密云水库三维水质模拟技术
- The water in Miyun Reservoir is clean and not polluted. 密云水库的水很干净没有受污染。
- Xiao Yun: Ah, are you talking about the Miyun Reservoir? 小云:哦,你是说密云水库吗?
- Zhifanggou Watershed of Ansai is taken as a case study in this paper. 文章试以安塞纸坊沟流域为例,通过航片解译分析流域土地利用现状。
- The mountain is the watershed of the two rivers of the Yangtze and Qiantang. 黄山是长江和钱塘江两大水系的分水岭。