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The port treatment of the port of port, the port treatment method (anti-head treatment method) and the spot aviation method
The port treatment of the port of port, the port treatment method (anti-head treatment method) and the spot aviation method
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机译：港口的港口处理，港口处理方法（防头部处理方法）和现场航空方法
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摘要
An inner cylinder 2 through which a concrete casting concrete pipe 16 can freely be inserted is surrounded by an outer cylinder 3 at a predetermined interval and the upper ends of the cylinders 2 and 3 are fixed to the annular roof plate 1 and the lower end to the annular base plate 6 A plurality of cuffs 8 are formed at predetermined intervals in the bottom plate 6 of the cap body A, and a gas-liquid venting hole 5 (9) is formed in the ceiling plate 1 and the bottom plate 6 Is formed as an opening.
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