-
Qhov chaw ntawm cov roj crude thiab cov xwm txheej rau nws tsim
Petroleum los yog crude yog ib hom complex natural organic teeb meem, lub ntsiab muaj pes tsawg leeg yog carbon (C) thiab hydrogen (H), carbon cov ntsiab lus yog feem ntau 80% -88%, hydrogen yog 10% -14%, thiab muaj ib tug me me ntawm oxygen (O), sulfur (S), nitrogen (N) thiab lwm yam khoom. Compounds tsim los ntawm cov elemen ...Nyeem ntxiv
