短語(yǔ)詞組短語(yǔ)catenary s theory 懸鏈線(xiàn)理論catenary ' s theory 懸鏈線(xiàn)理論segmental catenary theory 分段懸鏈線(xiàn)理論elastic catenary theory 彈性懸鏈線(xiàn)理論 返回 catenary theory