Dheecaan dhuxusha, waa gaaban yahay garoonka daamurka dhuxusha, farsamaynta daamurka dhuxusha ka dib marka laga saaro hadhaaga dareeraha ah ee dareeraha ah, waxaa iska leh nooc ka mid ah asphalt macmal ah, guud ahaan dareeraha viscous, semi-adag ama adag, madow iyo dhalaalaya, guud ahaan ka kooban carbon 92 ~ 94%, hydrogen qiyaastii 4 ~ 5%. Dhuxul...
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