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英语翻译1.sprinklers should be provided under ducts orcable tray

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英语翻译
1.sprinklers should be provided under ducts or
cable trays with an effective width of 1.2m which represent obstructions to ceiling sprinkler spray pattern.
2.The roof should be designed to withstand the dead load plus the
more restrictive of the balanced or unbalanced snow load,snow drif load where there are elavation difference between the buildings ,the rain load and other superimposed live loads.
1.在管子或电缆托架下面,应当为喷头提供1.2米的有效宽度,(因为)前者(即管子、电缆托架)会妨碍吊顶形洒水喷头的雾化状态/喷流型式.
2.屋顶的设计应该能够承受本身的固定荷重,以及平衡性及非平衡性雪载荷、雪运积载荷(它存在于建筑之间有高度差的情况下)、降雨载荷以及其它叠加在这上面的活载荷的限制.