symmetrical crown对称: symmetry; symmetrical路拱: road camber; crown不对称路拱: unsymmetrical crown不对称的路拱: unsymmetrical crown路拱: [土] road camber; crown◇路拱板 camber-board; 路拱高度 amount of crown; 路拱线 crown line下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:对称路拱，即可在微信中查询翻译
