field crop research是哪个国家的

field crop research是哪个国家的 field research 翻译That field yielded a good crop of potatoes last year. 翻译NASA Ames Research Center,Moffett Field CA,USA crop的中文意思是啥 传播学中field reseach,survey research,experiments有什么区别 它们分别是定性研究还是定量研究case study 是定性还是定量啊 查了好久 crop是这个英文什么意思crop是英文的意思 field field,. field Field field Field 请问desk research和field reserach有什么区别?急问~ research Research research 是in the field还是on the field