| 1. | Allene is an isomer of methyl acetylene .
丙二烯是甲基乙炔的一种异构体。 |
| 2. | The polydiene basic molecular structure is an excellent fuel .
聚二烯基本分子结构是一良好的燃烧剂。 |
| 3. | Thermolysis of the latter furnished the cyclohexadienone system .
后者经过热解，就转变成环己二烯酮的衍生物。 |
| 4. | In there compounds, the cyclopentadiene ring has only four hydrogens .
在这些化合物里，环戊二烯环只有4个氢。 |
| 5. | Synthetic rubber (sbr) is a copolymer of butadiene (75%) and styrene (25%) .
合成橡胶（SBR）是丁二烯（75）和苯乙烯（25）的共聚物。 |
| 6. | Charge-separated resonance structures do not contribute very much to the resonance hybrid of butadiene .
电荷分离的共振结构对丁二烯没有很大的贡献。 |
| 7. | Polybutadiene is changed to an aziridinyl compound (polybutadieneimine) by a series of reactions .
聚丁二烯经一系列反应转变成丙啶基化合物（聚丁二烯亚胺）。 |
| 8. | The polyester in these compositions is a 50% solution of a maleic acid-prophlene glycol condensate in diallyl phthalate .
在这些配方中的聚酯是马来酸--丙二醇缩合物在酞酸二烯丙酯中的50溶液。 |
| 9. | Polybutadienes, epoxy resins, and similar polymers may be used while they are in the viscous or liquid state of prepolymerization .
聚丁二烯，环氧树脂及类似聚合物在粘性状或液体预聚态都是可用的。 |
| 10. | To illustrate some of the features of the equilibrium phenomenon, let us look at the reaction in which cyclobutene is isomerized to 1.3-butadiene .
为了说明平衡现象，让我们看一下环丁烯异构成13一丁二烯的反应。 |
