“The United States of America National Park System”的概念、定义、翻译、参考文献-科学参考

单词	The United States of America National Park System
释义	The United States of America National Park System Encyclopedia 工学〔外国国家公园〕释 The United States of America National Park System美国国家公园系统美国政府为保存自然环境而设置的地区的总和。
随便看	natural vegetation natural ventilation natural ventilation of swine building natural vibration natural water natural water cycle system natural water quality natural weighting natural wetland natural wetland microbes Natural White Desert Protected Area natural width natural width of gamma ray spectrum natural width of spectral line natural width of γ-ray spectrum Natural will natural X-ray background natural year natural zeolite material natural γ-ray background natural γ-ray logger Nature nature Nature and Destiny, theory of nature and form

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。