发布时间:2025-01-23 09:06:12
1 钢梯踏步步数=钢梯全高/踏步步高(根据规范要求确定步高);
2 钢梯水平投影长度=踏步步数×踏步宽度(根据规范要求和现场实际尺寸确定踏步宽度);
3 钢梯全长的平方=钢梯水平投影长的平方+钢梯全高的平方.
dnf破旧的皮革碎布片生锈的铁皮最下级抵石最下级硬化剂风化的碎骨
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