Okwamanje, amandla amabhethri e-lead-asidi anezindlela zokulebula ezilandelayo, ezifana ne-C20, C10, C5, ne-C2, ezimele ngokulandelana umthamo wangempela otholwe lapho ekhishwa ngenani lokukhishwa elingu-20h, 10h, 5h, no-2h. Uma kungumthamo ongaphansi kwesilinganiso sokukhipha esingu-20h, ilebula ...
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