印度和孟加拉国的河道系统布满肠道致病菌。
The river systems of India and Bangladesh are rife with diarrhoeal disease.
由此，提出了建议开展水土保持治理对河道系统影响的若干基础理论问题。
Thus, several theoretical foundations that soil and water conservation influences its river system is set forth in this paper.
根据GIS、数据库系统的原理，设计实现了河道与库区泥沙淤积系统的数据模型、功能模块和主体结构，成功地将基础数据库进行了入库操作。
Based on the principle of GIS and database system, data model, function modules and agent structure of sediment silting system of watercourse and reservoir zone is designed.
应用推荐