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water door
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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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World Assembly on Aging Plan of Action
World Assembly on aging,Vienna
World Association for Sedimentation and Erosion Research
World Association of Newspapers
World Association of Soil and Water Conservation
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world atlas
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World Badminton Championships
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World Bank Loan Project Health IX of Maternal and Child Health sub-project in China
World Bank Loan Project Health VI of Comprehensive Maternal and Child Health in China
World Bank Loan to Develop Natural Rubber Project
World Bank’s education lending
World Baseball Classic
World Baseball Softball Confederation
World Basketball Championships
World Book Day
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World Buddhist Center Library
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World Charter of Soil
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