LINEAR ALIPHATIC: 1H1 1H 141 141 Stearic acid H00G一(cH)1一GH 0=d HO CYCLIC: CHy Cholesterol H一C一(GH-H一GCH一G一CH HC HC RO Aliphatic(脂肪族的，脂肪质的) Aliphatic(脂肪族的, 脂肪质的)