民主德国包依森堡市的金属结构厂生产了一种可伸缩套管式活动房。这种房子可以象电视天线那样一节节拉开,一共八节,也就是说,一共有8个房间,拉开以后就变成了一长列房间。需要运输时,可以一间一间地安进去,最后变成了一间。装在载重汽车上或直升机上,运起来十分方便。这是建房史上的一次重大革新,已受到国际上的重视。这种可伸缩套管式活动房由钢板制成,每间房的墙壁都有夹层,采用聚氨酯等高级绝热材料充填,房间具有高绝热性能,用途十分广泛,既可以在赤道区应用,也可以 A retractable tube-type mobile home was produced at the Metal Structure Plant in the German Democratic City of Balssen in Fortress. This kind of house can be pulled apart like a television antenna, for a total of eight festivals. That is to say, there are a total of eight rooms. When they are opened, they become a long row of rooms. When you need to be transported, you can safely enter one room and finally become a room. Installed on a truck or on a helicopter, it is very convenient to transport. This is a major innovation in the history of housing construction and has received international attention. This retractable tube-type movable room is made of steel plate. The walls of each room are sandwiched and filled with advanced thermal insulation material such as polyurethane. The room has high thermal insulation performance and is widely used. It can be used in the equatorial area or it can be