| 1. | Ethylene is a growth hormone in plants .
乙烯是植物中一种生长荷尔蒙。 |
| 2. | Plasma-polymerization of ethylene gives films of complex, uncertain structure .
乙烯的等离子聚合得到复杂的，无固定结构的薄膜。 |
| 3. | Jaffe found that when rubbed plants give off increased amounts of ethylene .
贾菲发现，当搓揉植株时，植物放出的乙烯数量就增加。 |
| 4. | Incomplete combustion and improper draft conditions can cause ethylene formation .
不完全的燃烧和不适当的通风条件能导致乙炔的产生。 |
| 5. | Ethylene and trans-dichloroethylene are both inactive in the infra-red in this region .
乙烯和反式二氯乙烯在红外光谱的这个区域都无活性。 |
| 6. | Ethylene and trans-dichloroethylene are both inactive in the infrared in this region .
乙烯和反式二氯乙烯在红外光谱的这个区域不出现吸收峰。 |
| 7. | Even so, the mode of action of the ethylene so produced is still difficult to specify .
即使是如此，这样产生的乙烯的作用方式仍是难以详细说明的。 |
| 8. | In contact with a hot surface, naphtha petroleum fractions crack to produce ethylene and propylene .
石脑油馏份与一个热表面接角，就裂解而得到乙烯和丙烯。 |
| 9. | Whenever a plant responds to applied, i. e., unbalanced, applications of auxin, ethylene is produced .
当一植物对不平衡地施用生长素起反应时，总是产生乙烯。 |
| 10. | It seemed that in methane there was twice as much hydrogen to 1 part of carbon as there was in ethylene .
看来甲烷中含有的氢是乙烯中的两倍，而碳的含量都是1份。 |
