| 摘要 |
Annular bead made of flexible loop (29, 59, 68, 79, 89) is at least at one end of filtre shell (6, 6', 26) firmly joined through a looping of the filter shell (6, 6', 26) itself or joined to it through lengthening (95) with this filter shell (6, 6', 26), and for fixation on the press is relevantly deformable.
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