“the history of irrigation technology in China”的概念、定义、翻译、参考文献-科学参考

单词	the history of irrigation technology in China
释义	the history of irrigation technology in China Encyclopedia 理学中国灌溉技术史释 the history of irrigation technology in China中国灌溉技术史农业灌溉被看作是富农、富裕的重要举措之一，几千年的农业发展积累了丰富的灌溉技术经验，在中国农业历史中有着重要的影响。
随便看	orthonormal set orthonormal system orthonormal system of functions orthonormal system of vectors orthonormal tetrad orthonormal transformation orthonormal vectors orthonormal wavelet orthopaedic polymer orthopanchromatic film ortho-para conversion ortho/para directing ortho para directing group ortho-para directing group ortho-para equilibrium ortho-para hydrogen conversion system ortho-para ratio orthopedic bone plate orthopedic bone screw orthopedic bone wire orthopedic pin orthopedics orthopedic shoes（pad） orthopedic surgical clamp orthopedic surgical hook & needle

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