Cameras and auxiliary equipment are fixed to the small truss of 3m aluminum alloy through the camera horizontal positioning system, 3m aluminum alloy truss is fixed on the upper camera horizontal positioning system beam, 3m aluminum alloy truss can be regarded as supporting the simple support of the camera horizontal positioning system, the horizontal spacing of the upper camera horizontal positioning system is L -2.2m, The cantilever part spacing is L-0.4m.<br>The design values of 3m aluminum alloy small truss wire loadares are as follows:
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