arched girder with parabolic chord的意思|示意
美 / /
英 / /
带抛物线弦的拱形梁
arched girder with parabolic chord的网络常见释义
有物线型弦杆的拱形桁架 有物线型弦杆的拱形桁架 arched girder with parabolic chord 有支撑拱肩的拱形桁架 arched girder with braced spandrels ..