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freezing shaft-sinking method
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freezing shaft-sinking method
Encyclopedia
工学
特殊凿井法
释
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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Hall's three dimensional structure model
hall structure
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hallucinogen
hallucinogen-related disorder
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hallux valgus
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halo
haloalkane
haloalkylation
halo assembly bias
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halo bias
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halo cell
halocline
halo concentration
halo-core structure
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