... lower chord 下弦 ; 下弦杆 lower chord bracing 下弦支撑 lower chord panel points 桁架的下弦杆节点 ...
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工程机械及构造设计--QTZ1250塔式起重机起重臂设计_论文 关键词：臂架， 拉杆，斜腹杆， 上弦杆， 下弦杆 [gap=1050]Keywords: arm, draw bars, oblique abdomen, upper chord, lower chord.
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lower chord panel points 桁架的下弦杆节点
lower chord bracing 下弦支撑
roof truss lower chord elevation 屋架下弦标高
lower chord length 上弦杆长度
lower-chord panel point [建] 下弦节点
The lower chord of a vierendeel truss, when loaded, is subjected to the combined action of prestressed compression, large axial tension, moment and shear.
空腹屋架下弦处于预压力、强大的轴拉力、弯矩和剪力共同作用下工作。
The ceiling system should satisfy these requirements that using lower chord ball as fixed point, adapting space change of hyperboloid steel grid, grid settlement under snow load.
其天花体系要满足以屋面网架下弦球为固定点和适应双曲面的空间变化、网架雪荷载作用下沉、热胀冷缩等变形运动。
End face with a gap, no boss butt is refers to the upper and lower casing left a certain gap between the upper and lower main chord rod end face at the same time contact.
端面有间隙、无凸台对接是指在上、下套管之间留有一定间隙，上、下主弦杆端面同时接触对接。
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