您要查找的是不是：
- 3-羟基N-甲基取代物 Levorphanol
- 苯甲酸及其甲基取代物的激光光解研究 Studies of Benzoic Acid and Its Methyl Substitutes by Using Laser Flash Photolysis
- 2-,3-,4-取代物和对应的典型图样比较时,具有更多的规律性。 Di-, tri-and tetra-substituted material show even more regularity with respect to the appropriate typical patterns.
- 2-，3-，4-取代物和对应的典型图样比较时，具有更多的规律性。 Di-, tri-and tetra-substituted material show even more regularity with respect to the appropriate typical patterns.
- 羟基 hydroxy
- 甲基取代的香豆素 bromomethy! substituted coumarin
- 取物 fetch
- 溴酸消旋-N-甲基-3-羟基吗啡烷 racemorphan hydrobromide
- 物语 story
- 羧甲基取代度对淀粉生物降解性能的影响 Effect of Carboxymethyl Group Substitution Degree on Biodegradability of Starch
- 不及物动词 intransitive verb(缩写：vi.)
- 取代物 proxy
- 再次甲基取代作用 remethylation
- 某物 something
- N，N-双(3,5-二叔丁基-4-羟基苄基)甲胺 N, N-bis(3,5-di-t-butyl-4-hydroxybenzyl)methylamine
- 装饰物 ornament
- 标的物 subject matter
- 氨苄青霉素-3-羟基酞酯 talampicillin
- 苯乙胺-N-甲基转移酶 phenylethyla mine-N-methyl transferase
- 氰化物 prussiate
