| 1. | The cycloaddition itself is the slow step .
环化作用本身是慢的一步。 |
| 2. | Continuous application may lead to sensitization .
连续用药可导致敏化作用。 |
| 3. | This reaction involves disproportionation of the aldehyde .
这个反应就是醛的歧化作用。 |
| 4. | The holes themselves have a restricting or stabilizing effect because flow may become sonic .
因为这时流动可成为音速流动，所以这些小孔本身有一种节制作用或稳定化作用。 |
| 5. | An increase in hydrogen ions within cell walls would decrease ionization of carboxyl groupings of the cellulosic fraction .
细胞壁内部氢离子浓度的增高，能够降低部分纤维质羧基的离子化作用。 |
| 6. | Whether this is due entirely to the solubilization and consequent improved digestion of the starch is not known .
这是否是完全由于溶液化作用和随后发生的改善过的淀粉的消化作用所致尚不清楚。 |
| 7. | When the particles become very large and are removed by gravitational settling, then another burst of nucleation can occur .
当粒子变得很大时，由于重力沉降而除去，然后，可能发生另一个突现的核化作用。 |
| 8. | . . . giving it a heightened perfluoralkylation process . .
令全氟烷化作用大大增强 |
| 9. | Giving it a heightened perfluoralkylation process
令全氟烷化作用大大增强 |
| 10. | Homogeneous catalytic asymmetric hydrogenation
均相催化不对称氢化作用 |
