Developing optimum cutting mechanism is a key technology for the design of special-section shield.
开发合理的切削机构是异形断面盾构的关键技术之一。
Stability of excavation face is a key problem to shield tunnel construction technology.
开挖面的稳定性是盾构隧道施工技术的关键。
Stability of excavation face is a key problem to shield tunnel construction technology.
开挖面的稳定性是盾构隧道施工技术的关键。
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