... 底坑 PIT 底坑深度 PIT DEPTH 顶 层 高 度 HEADROOM HEIGHT; HEIGHT ABOVE THE HIGHEST LEVEL SERVED; TOP HEIGHT ...
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tunnel headroom height 隧道净空高度
The composite frame beams can reduce the height of frame beam and increase the headroom of the building in steel structure of residence.
组合框架梁直用于住宅钢结构中，能起到减小框架梁梁高，增加建筑净空的作用。
This structural design can not only enlarge the building space, but also meet the requirements of layers height and headroom.
此结构设计既可以增大建筑空间，又可以满足层高和净空的要求。
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