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3D connection library
Space grids
Welded-ball grids
2.1
Welded ball node of an orthogonal square-pyramid grid
焊接球节点轴测图
焊接球详图
Drag to orbit · scroll to zoom · right-drag to pan
Erection order (3 steps)
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Start
1. 放线定位、安放焊接球
2. 拼装下弦杆
3. 拼装腹杆