| 摘要 |
A tentlike structure, hereinafter called a "pavilion," which includes two arches inclined away from each other at acute angles to the vertical and mounted so that they may be swung about their leg ends toward and away from this position and moved bodily toward and away from each other, a membrance of which one end is attached to each of the arches, and means for automatically sensing departures of the tension and/or the sag in the membrane from the desired values and moving the arches to correct them.
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