| 1. | Both the r groups are alkoxy residues .
两个R基团都是烷氧基。 |
| 2. | Adding other groups at the amine stage may be advisable .
在胺阶段引入其他基团可能是有好处的。 |
| 3. | Many groups can be added by nucleophilic substitution on a diazonium salt .
许多基团可通过向得自胶的重氮盐作亲核取代而加以导入。 |
| 4. | The betaine will collapse to the alkene only when these two functions are eclipsed .
只有当这两个基团移至重迭位置时碘盐才能裂解为烯烃。 |
| 5. | Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts .
大多数连于芳核能被直接取代的基团仅限于重氮盐。 |
| 6. | Molecules with both hydrophilic and hydrophobic groups are called amphipathic or amphiphilic .
分子兼有亲水的和疏水的两个基团，叫做两性的或两亲的。 |
| 7. | Heterogeneous bridging groups can raise the glass temperature according to their chemical composition .
不同类桥联基团根据它们的化学组成能提高玻璃化温度。 |
| 8. | in steroid acetates the influence of the co grouping upon the symmetrical mode is small.
在甾醇乙酸酯中，CO基团对对称形式的影响较小。 |
| 9. | Many drugs and pesticides contain tertiary amino groups and could, therefore, be expected to undergo nitrosation in the body .
有很多的药物和农药含有叔胺基团，因此有可能在体内发生亚硝基化。 |
| 10. | Apparatus for microdetermination of alkoxyl groups
烷氧基团微量测定用仪器 |
