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冻结凿井法
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冻结凿井法
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工学
特殊凿井法
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freezing shaft-sinking method
冻结凿井法
在开凿井筒前,将井筒周围含水层用人工制冷方法冻结成封闭的圆筒形冻结壁,以抵抗地压并隔绝地下水与井筒的联系,在冻结壁的保护下进行掘砌作业的特殊凿井法。
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secondary clock
secondary cohomology operation
secondary coil
secondary colony
secondary color
secondary colour
Secondary Colour of Jade Artifact
Secondary Colour of Jade Material
secondary component
secondary composition
secondary conditioning
secondary consolidation
secondary constriction
secondary consumer
secondary cooling of continuous casting
secondary copper
secondary cortex
secondary cosmic radiation
secondary cosmic ray
secondary cosmic rays
secondary crater
secondary crystallization
secondary culture
secondary data collection
secondary development of land
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