Ulayini ongaphezulu ubhekisela kulayini ovulekile ongaphezulu omiswe phansi, okuwumugqa wamandla kagesi omiswe esigxotsheni esinama-insulators kanye nezixhumi zamandla.Yakhiwe ngocingo kanye nentambo yaphansi (intambo yaphansi engaphezulu), umbhoshongo, isivikelo, ihadiwe, nezinye izingxenye zesisekelo sombhoshongo...
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