... surface bumper sub 地面震击器 surface caisson 水面浮箱 surface calibration facility 地面刻度装置 ...
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Because the geological data were not accordant to the actual condition, the south open caisson was declining after falling on the terraced surface to fail in reaching the design height.
由于地质资料与实际不符，南沉井在没有沉到设计高程时局部已落到岩面上，导致沉井倾斜。
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