Third, through the study on project database, use the data stock of logic level to store the figure restraint and management of the water conservancy drawing-library.
第三，通过对工程数据库的研究，运用逻辑层次数据库存储图形约束及水工图库的管理。
Third, through the study on project database, use the data stock of logic level to store the figure restraint and management of the water conservancy drawing-library.
第三，通过对工程数据库的研究，运用逻辑层次数据库存储图形约束及水工图库的管理。
应用推荐