Yintoni ivalve yeglowubhu?Iindawo zokuvula kunye nokuvala zevalve yeglowubhu yidiskhi emile okweplagi, indawo yokutywina isicaba okanye i-conical, kwaye idiski ihamba ngomgca othe ngqo kumgca osembindini wolwelo.Ifom yentshukumo yesiqu, kukho uhlobo lwentonga yokunyusa (ukunyuswa kwesiqu, ivili lesandla alinyusi...
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