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。
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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