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Figura 14.
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CHUMACEIRAS DE FRICÇÃO
Figura 12.
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'L¤PHWUR GH 5RODPHQWR 3' Figura 15.
Q ̰ Q¼PHUR GH HVIHUDV RX UROHWRV fr ̰ YHORFLGDGH UHODWLYD HP UHY V HQWUH os anéis interior e exterior