^pof;
Intelligent;
Machines;
Chinese;
Academy;
of;
Sciences;
Hefei;
230031;
P.R.China;
^pof;
Information;
Science;
and;
Technology;
University;
of;
Science;
and;
Technology;
of;
China;
Hefei;
230026;
P.R.China;
农业领域; 网络资源; 本体论; 半自动; 建设方; 农业信息服务; 关系型数据库; 知识服务;