upper chord的意思|示意
上弦杆；上楔材料
upper chord相关短语
1、 upper chord member 上弦杆件,上弦杆
2、 upper chord WESTBANK 上弦
3、 upper chord ring beam 上弦环梁
4、 upper chord of roof truss 屋架上弦杆
5、 upper and lower chord 上下弦
6、 upper r chord 上弦
upper chord相关例句
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、带凸台对接外形是指在标准节上部主弦杆上焊有定位凸台，定位凸台伸人另一标准节主弦杆内，上、下套管之间留有一定间隙配合定位。
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。