“weirs and dams in ancient China”的概念、定义、翻译、参考文献-科学参考

单词	weirs and dams in ancient China
释义	weirs and dams in ancient China Encyclopedia 工学中国水利科学技术史释 weirs and dams in ancient China中国古代堰坝中国古代蓄水工程和引水工程中的壅水建筑物。
随便看	step characteristics step child step-counting function step curve of cumulative frequencies step disturbance step-down operator step-down ratio step-down transformer step-down turns ratio step drilling tool Step-empress of Jingtai Step-empress of Xuanzong step factor step filter step-formed graph step function step-function signal step generator step growth polymerization step-growth polymerization Stephane George Mallat Stephano stephanocolporate stephanocyst stephanokont

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