“water conservancy in ancient Kaifeng city”的概念、定义、翻译、参考文献-科学参考

单词	water conservancy in ancient Kaifeng city
释义	water conservancy in ancient Kaifeng city Encyclopedia 工学〔中国古代城市水利〕释 water conservancy in ancient Kaifeng city古都开封水利古代开封市的航运、防洪、供水、灌溉等水利事业。
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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。