cylindrical double-deck reticulated shallow shell
depressed center double-deck cars specialized for transport of automobiles
Double deck
双层
双层桥面
双层交通
内盘固定外盘转动钻盘
双层钢结构
浮筏
双甲板
楼中楼
Double deck construction
Double Deck Continuous Bridge
double deck diesel motor train set
double deck drawing capstan
Double deck little canal
double deck passenger car