| 摘要 |
PROBLEM TO BE SOLVED: To provide a means for enhancing the workability of assembly operations for a molded object with respect to a tank wherein the plastic molded object is taken as a constitutive skeleton of a tank space. SOLUTION: In the tank, a structure, wherein the plastic molded objects are assembled vertically and horizontally, is taken as a storage space, and the periphery of the structure is covered partially or wholly with a sheet and the like. The installation surface of the structure is taken as a flat surface.
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