| 摘要 |
The apparatus consists of sections whose frame consists of two tubular stands (3), which are detachably fitted at both ends always in at least one fluke (2). The lower fitted fluke (2) is fixed to the base support {1) and fixed to the upper fitted fluke (2) is the main roof support (4). On the roof support (4), plumb to its axis, there are collars (5), slotted into which are roof beams (6). Fixed to the upper side of the roof beams (6) is the roof cover (8).<IMAGE>
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