Based on the investigation and study, this paper deals with the history and present situation of the animal drawing plough moldboard in our country, and discusses its property of scouring soil.

 
  • 在调查研究基础上,分析了我国畜力犁壁的历史与现状,并对其脱土性进行了探讨。
今日热词
目录 附录 查词历史