ecological

• Ecological systems are models for sustainability
  生态系统是可持续发展的典范。
• Ecological civilization : the new form of human civilization
  人类文明发展的新形态
• A study on the development of ecological economy in kunming
  昆明生态经济发展研究
• Green thinking : ecological analysis of university management
  高校管理的生态分析
• Ecological environment development made new progress
  生态环境建设取得新进展。
• Side effect of atrazine to ecological environment
  农药莠去津对生态环境的负面影响
• Theory and practice of ecological water conservancy
  中国生态省建设实践与理论探索
• A discussion on the ecological knowledge on hui ' s culture
  论回族文化中的生态知识