| 摘要 |
Two insulating load-bearing parts (3) extend radially between the container base (2) and the enclosure base (4), and their contour is such that they only make spot contact with the bases. One part has a downwardly open central notch. The other part has a similar upwardly open notch. Notch width is equal to part thickness, and the two parts are assembled into a cross. The parts have bosses (7) on their edges facing the enclosure base that slot into hollows (8) in the base. The bosses act as feet, and they have elastic wings for base engagement.
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