[作业 运输] 双层外壳 tube and shell type with double wall: 双壁管壳型double shell: 双层薄壳; 双层外壳; 双属外壳shell type: 贝壳型; 壳式; 密闭式; 铁壳型; 外铁型double bent shell roof: 双曲薄壳屋顶; 双弯薄壳顶double curvature shell: 双曲壳体下载手机词典可随时随地查词查翻译