natural bow静挠度, 自然挠度naturaladj.自然的；天然的；私生的natural language information formatting自然语言信息形式化natural frequency of transient recovery瞬时恢复电压自然频率Natural Resource Recreation and Tourism自然资源旅游与娱乐Natural killer cell inhibitory receptor自然杀伤细胞抑制性受体natural language processing workstation自然语言处理工作站Natural broad-leaved evergreen forest天然常绿阔叶林natural forest protection project areas天保工程区Natural gamma spectroscopy logging tool自然伽玛能谱测井仪Natural Rate of Unemployment HypothesisNatural or Synthetic Raw Materials?