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水闸门
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水闸门
为避免因停电及排水设备发生故障或因较大突水造成淹井事故,而在通往水害威胁地区巷道的总汇合处、井底车场、井下水泵房等巷道内设置的用于拦截水流的防水设施。
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the history of E-government in China
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the history of E-government in Singapore
the history of E-government in South Korea
The History of Emily Montague
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The History of Humanity
The History of Human Marriage
the history of industrial machinery
the history of insurance investment in the People's Republic of China
the history of irrigation and water conservancy in China
the history of irrigation technology in China
The History of Jilin Opera
The history of legislation of the Republic of China
The history of medicine in Modern China
The History of Modern and Contemporary Chinese Dance Drama
The History of Modern and Contemporary Dance in China
The History of Modern Western Psychology
the history of pig production in China
the history of poultry
the history of reading
The History of Sexuality
The History of Sir Charles Grandison
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