单词	hardness and softness
释义	hardness and softness 刚柔性
随便看	aromatics saturation aromatics separation aromatics series aromatics substance aromatics sulfinic acid aromatics sulfonic acid aromatic stacking Aromatic steranes Aromatic stimulant and natural relaxant aromatic stomachic aromatic structural index aromatic structural index,ASI aromatic structure aromatic style aromatics type gasoline aromatic substance Aromatic substances aromatic substitution aromatic sulfinic acid aromatic sulfonic acid aromatic sulfonic acid-formaldehyde resin aromatic sulfuric acid aromatic sulphate aromatic sulphonic acid Aromatic sulphuric acid