Gongxu model works as a frame in the construction system of the underground structure group, and then the Gongxu model nodes in this frame are refined to Huodong model.
地下厂房洞室群施工系统以工序模型作为框架，将框架中的模拟工序节点细化为活动模型。
However, the processes have been refined and the tubing diameters have been increased to provide a rigid more reliable frame.
然而，过程已改进和油管直径增加了更多的刚性提供可靠的框架。
Before the rollers and adjust to screw so that the roll from the direction and avoid refined rubber machine increases the damage of the frame rollers or act as a security role.
前辊筒便向调整螺杆方向移动，使辊距增大而避免炼胶机辊筒或机架的损坏，起到安全的作用。
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