The thesis based on the research and trail-produce of tractors and rope-driven machines reviewed China agricultural machinery research policies and measures and discussed their development effects and failure . 5 .

文章结合拖拉机和绳索牵引机的 试制和研发情况，论述了我国的农机研制政策、措施及发展，剖析了政策的作用和失误。五、 关于 农具 改革 运动。

In terms of Important Agricultural Machinery Research and Trail-produce .

关于重要农业机械的研究和 试制。