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灌区工程运行维护
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灌区工程运行维护
Encyclopedia
工学
灌溉工程管理
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irrigation engineering operation and maintenance
灌区工程运行维护
以维护灌区灌排工程设备完好、保持正常运行为目的的管理过程。
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ancient dramatic stage in Ladong Village, Liping County
ancient drilling in China
ancient eclipse observations in China
ancient Egypt
ancient Egyptian architecture
ancient Egyptian costume
Ancient Egyptian gardens
Ancient Egyptian gold craft
Ancient Egyptian Hieroglyphic
ancient Egyptian law
Ancient Egyptian tomb painting
Ancient Egyptian tomb relief
Ancient Emperors
ancient ethnic migration
ancient farming system
ancient farming techniques
ancient farm power
ancient farm tools
ancient fishing gear
Ancient Fu
ancient ginkgo at the Tianshidong Taoist Temple of Dujiangyan City
ancient ginkgo group in Pan County
Ancient Ginkgo in Changshun
Ancient Ginkgo in Fuquan City
ancient ginkgo in Jiyuan
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