电梯系统——包括底座、轨道和机房——可以被安装在工厂里，把受伤的风险降到最小。
Elevator systems—the base, rails, and machine room—can be installed at the factory, eliminating the risk of injury.
建立轨—板—桥—墩一体化空间计算模型，线路纵向考虑钢轨、轨道板和底座板、桥梁等的相互作用。
The interactions of rail, slab, support layer and bridge are taken into consideration to the longitudinal direction of track.
设有轨道(7)，该轨道与半自动火焰切割机(4)的底座滑动相连。
The improved semiautomatic flame cutting machine is also provided with a rail (7) which is in slide connection with a base of the semiautomatic flame cutting machine (4).
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