Ezilungiselelweni zezimboni, ukusetshenziswa komoya ocindezelwe kubalulekile ezinhlobonhlobo zezinhlelo zokusebenza, kusukela ekunikezeni amandla amathuluzi we-pneumatic kuya emishini yokusebenza. Kodwa-ke, ukuba khona komswakama emoyeni ocindezelwe kungaholela ezinkingeni eziningi, okuhlanganisa ukugqwala, ukungcoliswa, ...
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