中国农业机械化发展现状与政策
@@ Agricultural mechanization in China is developing healthily at a high speedAgriculture is a multi-functional basic industry,which is possessed of food security,raw material supply,employment and revenue increasing and ecosystem protection.
中国、农业、机械化、发展现状、政策、food security、high speed
TU2;G12
2014-06-23(万方平台首次上网日期,不代表论文的发表时间)
共4页
69-72