| 摘要 |
A storage device for liquid and other substances made as a closed body with empty space for storage, including a bse and upper part palced at a distance one opposite the other joined to each other by means of a thin and flexible envelope connected to the whole circumferences of them and wherein a stretching means are located on them force in opposite directions and generates a continuous tension on the envelope and prevent its collapsing, and wherein removal of the stretching means enables collapsing of the storage device envelope and reduction its volume. |
