lower chord

短语词组

短語

• lower -chord panel point [建]下弦節點
• lower chord length 上弦杆長度
• lower chord member support 下承式
• lower chord panel points 桁架的下弦杆節點
• lower chord bracing 下弦支撐
• upper and lower chord 上下弦
• roof truss lower chord elevation 屋架下弦標高
返回 lower chord