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来源:雅诚德英语网
The construction of Pipe Jacking is beset with difficulty due to the large propulsive force for several years.
大口径长距离顶管施工顶进推力过大是困扰顶管施工多年的技术难题。
The construction of Pipe Jacking is beset with difficulty due to the large propulsive force for several years.
大口径长距离顶管施工顶进推力过大是困扰顶管施工多年的技术难题。