我国农机购置补贴政策实施效果分析He Wanli,Zhu Ruixiang,Huang Yuxiang,Zhao Xiaofeng,Ma HuiJournal of Agricultural Mechanization Research（2010）引用 15|浏览12关键词the purchase subsidies of agricultural machinery,implement effect,policyAI 理解论文溯源树样例生成溯源树，研究论文发展脉络Chat Paper正在生成论文摘要
