Yintoni umtshayelo?Sonke siyazi ukuba yintoni umshanelo: isixhobo sokucoca esenziwe ngemicu eqinile (iplastiki, iinwele, amakhoba engqolowa, njl.njl.) idityaniswe kwaye ihambelana nomqheba we-cylindrical.Ngamagama angaphantsi kobugcisa, umtshayelo yibrashi enesiphatho eside esidla ngokusetyenziswa ngokudityaniswa nothuli.Ewe, mtshayelo...
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