Farming systems for shifting cultivation are generally carried out in dryland areas, especially in the tropics in Asia, Africa and Latin America. By enhanc... UYH Darwantojamharisubejo - Asian Agri-History 被引量: 0发表: 2018年 Understanding the Objectives of Pigs Farming Development in Arfak ...
The power compensation mechanism of the fuel cell hybrid power system involves meeting various demands. During tractor plowing and cultivation, the fuel cell needs to provide average power to meet continuous power requirements. At the same time, the power battery must provide additional power output ...
Department of Urban Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan 2 Department of Urban and Rural Planning, Faculty of Architecture and Urban Planning, Chongqing University, Chongqing 400045, China ...