| 摘要 |
In construction of a drum in which at least one open end of a cylindrical drum shell is closed by a drum head which is held in tension by assistance of a fastening element such as a suspension ring, opposite fastening elements are connected to each other by long tubes which are directly and mechanically connected to the drum shell. Not only the long tubes but also the drum shell shares mechanical load generated by tensioning of the drum head so as to elongate the life of the long tubes.
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