[ˌri:inˈfɔ:smənt]
增力，增强，加强：力量或强度增加。行为科学中，指给予一种在反应发生前即可使之增强的刺激
习惯用语reinforcement of reflex
反射增强：指激发某一反射的同时，用引起患者精神或体力贯注的方法使反射性反应增强- 17-hydroxycorticosteroid
- 17-hydroxycorticosterone
- 17-hydroxysteroid
- 2,3-bisphosphoglycerate
- 2,3-diphosphoglycerate
- 2,4,5-T
- 2,4-D
- 2,4-dichlorophenoxyacetic acid
- 2,5-dimethoxy-4-methylamphetamine
- 25-hydroxycholecalciferol
- 25-hydroxyergocalciferol
- 2-acylglycerol O-acyltransferase
- 2-aminoadipate transaminase
- 2-aminoethanol
- 2-deoxy-D-glucose
- 2-oxoglutaric acid
- 2-oxoisovalerate dehydrogenase (lipoamide)
- 2-PAM
- 2-phosphoglycerate
- 2-phosphoglyceric acid
- 3,4-benzpyrene
- 3,4-dihydroxyphenylalanine
- 3,4-dimethoxyphenylethylamine
- 3',5'-cyclic-GMP phosphodiseterase
- 3,5-diiodothyronine