Sharaxaad Gaaban:

Hordhac kooban Birta aan birta lahayn ee korantada matoorrada penstock-ka waxaa inta badan loo adeegsadaa warshadaha nadiifinta wasakhda, dhirta biyaha, biyo-mareenka iyo waraabka, ilaalinta deegaanka, korontada, kanaalka iyo mashaariicda kale si loo gooyo, loo habeeyo socodka, loona xakameeyo heerarka biyaha. Qalabka korantada ee birta aan birta lahayn ee matoorka penstock-ka ayaa lagu isticmaalaa badhtamaha kanaalka, xidhidh saddex gees ah. Maaddada qaybaha ugu muhiimsan Walaxda jidhka birta ah, birta kaarboonka Walxaha disc...