Kusho ukuthi amalungu amakhulu athwala imithwalo akhiwe ngensimbi.Kuhlanganisa isisekelo sesakhiwo sensimbi, ikholomu yensimbi, ugongolo lwensimbi, i-truss yophahla lwensimbi (ububanzi beshabhu bukhulu kakhulu, okuyisakhiwo sensimbi sophahla), uphahla lwensimbi, futhi ngesikhathi esifanayo, udonga lwe-st. .
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