According to the system models talked above, the system simulation software for the construction of underground structure group is developed using the object-oriented technology.
针对上述系统模型，应用面向对象的开发方法编制了地下厂房洞室群施工系统仿真软件，适用于地下厂房洞室群施工仿真。
Crane girders anchored to rock face is a new structure and has become core structure for construction and operation of underground powerhouse.
岩壁梁是一种新型结构，因而岩壁梁是地下厂房施工和运行的核心建筑物。
The urban shallow large-section underground structure has become important and difficult part of engineering because of the complexity of its structure and construction.
城市浅埋大断面地下结构因其结构和建设的复杂性往往成为工程建设的重点和难点。
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