研究方法 yánjiū fāngfǎ
          
              yánjiū fāngfǎ 
              
              set phrase 
              research methods 
              Domain: Modern Chinese 现代汉语
              
                , Subdomain: Science 
              
              
              
              
               
          
          
          
              yánjiū fāngfǎ 
              
              set phrase 
              research methods 
              Domain: Modern Chinese 现代汉语
              
                , Subdomain: Science