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- W265804514 abstract "介绍了海河流域碳、氮、硫、磷及生态环境数据库的建库目标,指导系统分解的概念模型,选择录入数据的指标体系,数据库系统构成及所含6个子库典型输出表。做为数据库的必要功效补充,还建立了地理信息系统。整个数据库系统是在DBASE-Ⅲ、汉化地理信息系统工具和FORTRAN-77统计与模式程序包支持下,在PC/AT微机上实现的。" @default.
- W265804514 created "2016-06-24" @default.
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- W265804514 date "1991-07-02" @default.
- W265804514 modified "2023-09-24" @default.
- W265804514 title "海河流域碳、氮、硫、磷及生态环境数据库" @default.
- W265804514 hasPublicationYear "1991" @default.
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