| 1. | Presumably reactive surfaces became blocked . 反应表面可能被堵塞了。 |
| 2. | These atoms are highly reactive . 这些原子有较高的反应活性。 |
| 3. | Ammonia is a very reactive chemical . 氨是很活泼的化合物。 |
| 4. | Severe steric effects at the reactive carbon would impede the substitution . 大的立体效应阻止在碳上的取代。 |
| 5. | More reactive are the heavier isotopes of hydrogen, deuterium and tritium . 更为活跃的是氢的较重同位素,氘和氚。 |
| 6. | Highly reactive and delocalized electrons would react with photons . 高度活性和非定域的电子应该能够与光子起反应。 |
| 7. | Fiber reactive dyes are from true chemical bounds between dyestuff and fiber . 纤维活性染料来源于染料与纤维之间形成的真正化学键。 |
| 8. | The first of the reactive intermediates to be considered is known as a "carbocation" . 要研究的第一种活性中间体叫做“正碳离子。” |
| 9. | The first of the reactive intermediates to be considered is known as a "carboniumion" . 要研究的第一种活性中间体叫做“正碳离子”。 |