Waxaa jira saddex nooc oo ah wejiga xidhitaanka flange-cadaadiska sare: wejiga daboolka siman, oo ku habboon cadaadiska hooseeya, marar dhexdhexaad ah oo aan sun ahayn; Dusha daboolan ee concave iyo convex, oo ku habboon marmar cadaadis yar oo sarreeya; Tenon iyo jeexdin dusha daboolaya, oo ku habboon ololi kara, walxaha qarxa, warbaahinta sunta ah...
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