The paroxysmal faint pest affairs happened frequently in China recently.How to control the emergency events has become a problem which needs to be solved quickly as soon as possible.

 
  • 摘要我国突发林业有害生物事件频繁发生,如何应对突发事件是目前亟待解决的问题。
今日热词
目录 附录 查词历史