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pillar of water-prevention
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pillar of water-prevention
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水害治理
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pillar for water-preventing;pillar of water-prevention
防水矿柱
采矿工作面接近具有危害性的充水空间或导水通道有充水溶洞、老采空区(老窑)、导水的大断层等时,为了防止地下水突然涌入矿坑而保留的部分矿体。
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Sarwanam Theatre Group
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Sasakian manifold
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Sasaki Shigeo (1912—1987)
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saser
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