As a method of spanning space, the arch can support greater weight than a horizontalbeam.
作为一种跨越空间的方法，拱能够承受比水平梁更大的重量。
2
Note the 2x102 degree horizontalbeam width.
请注意2x102度水平波束宽度。
3
A mobile lifting device comprises a dismantlable frame mounted on wheels and supporting an elevated horizontalbeam which projects out beyond the perimeter of the frame.