北京东南郊化工区
Beijing southeast chemical industry zone
农机化问题
agricultural mechanization
农机化投入
agricultural mechanization investment
农机化水平
agricultural mechanization degree
农机化社会服务
mechanization of social services
农机化科技创新体系
agricultural mechanization science innovation system
农机化经营收入
income of agricultural mechanization management
农机化建设
agricultural construction
农机化技术
agricultural mechanization technology
农机化公共服务体系
Agricultural Mechanization public service system
农机化现状
Agricultural mechanization status