“中国历史时期运河”的概念、定义、翻译、参考文献-科学参考

单词	中国历史时期运河
释义	中国历史时期运河 Encyclopedia 理学中国历史上的运河释 Chinese historical Canals中国历史时期运河中国历史时期人工开凿的通航水道，至晚于春秋战国时期已经开始修凿运河，后世兴修的京杭大运河，迄今仍是世界上最长的运河。
随便看	spectral reflectance standard spectral reflectivity spectral region spectral relaxation time spectral representation spectral representation of autocovariance spectral representation of correlation function spectral representation of operator spectral representation of stationary process spectral representation theorem spectral resolution spectral resolution of an operator spectral resolution of operator spectral resolution of terahertz spectrum spectral resolving power spectral response spectral response curve spectral response of terahertz spectrum spectral responsivity spectral rigidity spectral ring spectral scale spectral selectivity spectral semi-invariant spectral sensitivity

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。