Use a level to master intertropical crop land well and truly and find out its to restrict an element, the article used coefficient law to undertake evaluating an analysis.

 
  • 为了客观准确地掌握热带作物土地利用水平并找出其制约因素,文章采用系数法进行了评价分析。
今日热词
目录 附录 查词历史