upper and lower chord的意思|示意
上下和弦
upper and lower chord的网络常见释义
上下弦 ... lower chord panel points 桁架的下弦杆节点 upper and lower chord 上下弦 bottom chord bar 下弦杆 ...
upper and lower 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、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。
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。