“中国历史干旱”的概念、定义、翻译、参考文献-科学参考

单词	中国历史干旱
释义	中国历史干旱 Encyclopedia 工学〔水利著作〕释 History Drought in China《中国历史干旱》记述1949年至2000年中国农业干旱的特点、时空变化规律和发展趋势的专著。
随便看	polynomial series polynomial solution polynomial space class PSPACE polynomial space complexity class polynomial space complexity class, PSPACE polynomial span polynomial spline polynomial symbol polynomial term polynomial theory polynomial time polynomial time algorithm polynomial-time algorithm polynomial time approximation scheme polynomial-time approximation scheme polynomial-time approximation scheme (PTAS) polynomial time class P polynomial time complexity class polynomial time complexity class, P polynomial time computable distribution polynomial time hierarchy polynomial time many-one reducible to polynomial time reducible language polynomial time reduction polynomial time samplable distributions

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。