double-deck floating roof 双盘浮顶 ; 双层浮顶 ; 双层弗 ; 双盘式浮顶

single deck floating roof tank 单盘浮顶油罐

single deck floating roof 单层浮顶 ; 单层弗

double deck floating roof 双层板浮顶

single-deck floating roof 单盘式浮顶