Isibiyeli
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Idiphu eshushu ifakwe i-Angle isibiyeli sentsimbi engatyiwayo
Inkxaso exhaswa ngokuthe ngqo kwikholamu yekhonkrithi eqinisiweyo idla ngokuxhaswa, ngokuqhelekileyo ithatha i-1/5 ~ 1/10 ye-span.Ubude be-internode yenkxaso ngokuqhelekileyo yi-2m okanye i-3m.