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汉语拼音：yǐ xī

1.最简单的烯烃，分子式C2H4。在常温常压下为无色气体，可从石油裂化产物中取得。是重要化工原料。

2.一种植物激素。可提早果实成熟期，促进器官脱落，调节性别转化，有利于产生雌花等。

1. 有机化合物，无色的可燃气体，有甜香的气味。石油分解时产生大量的乙烯，所以也叫成油气。是制造乙醇和其他有机化合物的重要原料，又可用于焊接和切割金属。

• Nonionics include polyoxyethylene condensates, sucrose esters and alkyl amine oxides.

  非离子型表面活性剂有聚氧乙烯缩合物糖酯和烷基胺氧化物.

• Nonionic surface - active agents include polyoxyethylene condensates, sucrose esters and alkyl amine oxides.

  非离子型表面活性剂有聚氧乙烯缩合物, 糖酯和烷基胺氧化物.

• 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.

• 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.

• 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.

• Plants are sensitive to the simple olefins, particularly C 2 H 4.

  植物对简单烯烃是敏感的特别是乙烯.

• Diethylenetriamine will swell the resin.

  二乙烯三胺将使树脂膨胀.

• Diphenyl carbonate shows a typical vinyl ester effect.

  碳酸二苯酯表现典型的乙烯的酯类的效应.

• Polyvinylchloride is insoluble in vinylchloride.

  聚氯乙烯不溶于氯乙烯.

• Ethylene is a growth hormone in plants.

  乙烯是植物中一种生长荷尔蒙.

• 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.

• 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.

• 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.

• Third, the PTFE ( F 4 ) of the corrosion seal ring.

  第三, 聚四氟乙烯 ( F4 ) 密封环的腐蚀.

• Inside pockets shall be same color as outer vinyl.

  内部的口袋将是和外部的乙烯基相同的颜色.