在流域出口建立卡口站，进行基于过程的汛期水文水质全面监测，同时在流域内设立径流小区，分析了径流事件中径流量、沉积物量、氮和磷负荷规律。
The hydrology and water quality of runoff events were measured on gauging station and the runoff plots in the watershed and the rules of runoff, sediment, nitrogen and phosphorus load were analyzed.
张家口市水保试验站坡长小区五年观测资料表明，降雨强度影响径流量、侵蚀量随坡长的变化。
Based on observation data of experiment plots at the City of Zhangjiakou, analysis was made on the effect of rainfall intensity on the relationship among slope length, runoff and soil loss.
文中论述了多站时差无源定位的基本原理，提出了以TDOA多基站小区无源定位系统为基础构建区域定位网络的方案。
This paper puts forward a method to construct a local positioning network based on the TDOA multiple stations cell positioning system.
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