| 1. | also adds the double bond.
同时也加成到双键的两端。 |
| 2. | The expected 2＋2 cycloadduct (79) was not observed .
未见到所预期的22环加成物（79） |
| 3. | The addition reaction with hydrogen cyanide is base-catalysed .
与氰氢酸的加成是碱催化的。 |
| 4. | The combined addition-elimination sequence is referred to as a condensation reaction .
将联合加成-消除反应的结果称为缩合反应。 |
| 5. | Addition to carbonyls is one of the most important reactions in organic chemistry .
对羰基的加成作用是有机化学中最重要的反应之一。 |
| 6. | The addition of hydrogen bromide involves the attachment of an anionic nucleophile in the final step .
溴化氢加成的最后一步，是负离子亲核试剂的附加。 |
| 7. | The problem of orientation of addition goes right back to the beginning of freeradical chemistry .
关于加成的定向问题，可以一直追溯到自由基化学的起源。 |
| 8. | The mechanism is nothing more than an additionelimination process which we have encountered previously .
这个机理只不过是我们以前遇到过的加成消去过程。 |
| 9. | Regular vinyl addition polymers may be obtained from particularly strained endocyclic double bonds .
由带特殊张力的桥环双键可以得到规整的乙烯类加成聚合物。 |
| 10. | The production of polymer in each case involves the rapid addition of monomer to a few active centres .
在各种情况下聚合物的生成都是单体对少数几个活性中心的快速加成。 |
