Umsele weresin wekonkile yeresin, njengodidi lwenkqubo yokuhambisa amanzi, inomthamo ogqwesileyo wokuqokelelwa kwamanzi.Izinto ezisetyenzisiweyo, ikhonkrithi ye-resin, inika umthamo ophezulu wokuthwala umthwalo kunye nokusebenza kakuhle kwamanzi.Ukongeza, uyilo lwemodyuli yeresin yeconcrete yedrain yomsele ibonelela ngamandla ...
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