【化】 位阻酚; 空间位阻酚

hindered rotation hindered isotope hindered motion hindered alpha decay hindered phenolic antioxidant hindered internal rotation phenol storage phenol resins phenol red phenol oxidase phenol derivative phenol formaldehyde sterically hindered hindered phenol phenol Phenol phenol- hindered settling hindered amine hindered setting hindered sedimentation hindered torsion