lower chord

短语词组

短语

• lower -chord panel point [建]下弦节点
• lower chord length 上弦杆长度
• lower chord member support 下承式
• lower chord panel points 桁架的下弦杆节点
• lower chord bracing 下弦支撑
• upper and lower chord 上下弦
• roof truss lower chord elevation 屋架下弦标高
返回 lower chord