Now, technology of web database is comparatively mature, web database system is constructed on C/S or B/S model ordinally.
目前，网络数据库技术比较成熟。 网络式数据库系统一般采用C／S或者B／S模式搭建体系结构。
From above to below, the erosion types ordinally are sheet erosion, gravitational erosion, rill erosion, gully erosion, sediment.
自上到下侵蚀主要表现为片蚀、重力侵蚀、细沟侵蚀、切沟侵蚀、冲沟侵蚀、沉积。
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