短語(yǔ)詞組短語(yǔ)lower chord member support 下承式bottom chord member 下弦桿chord member of truss 桁架弦桿top chord member 上弦桿compressive chord member 受壓弦桿upper chord member 上弦桿件;上弦桿main chord member 主弦桿chord member with integral joints 整躰節(jié)點(diǎn)弦桿integral joints of chord member 整躰節(jié)點(diǎn)弦桿 返回 chord member