生物脂质来源于酮脂酰和异戊二烯基团。
Biological lipids originate from ketoacyl and isoprene groups.
这些石油副产品之一便是异戊二烯。
异戊二烯也可以通过人工聚合来制造合成橡胶。
Isoprene can also be artificially polymerised to make synthetic rubber.
而异戊二烯必须极其纯净才能生产出合成橡胶。
Isoprene needs to be extremely pure to make synthetic rubber.
氯化发生在异戊二烯单元附近形成烯丙基氯。
Chlorination occurs adjacent to the isoprene units to form allylic chlorines.
讨论了双环戊二烯系列石油树脂的合成与应用。
This paper described the synthesis and application of the series of DCPD petroleum resins in detail.
本文用半缩聚法合成双环戊二烯型不饱和聚酯树脂。
DCPD type unsaturated polyester resin prepared by using semi condensation polymerization method is proposed.
综述聚双环戊二烯聚合机理，反应注射成型技术概况。
The polymerization mechanism of PDCPD and technical survey of RIM are reviewed.
综述了双桥连二环戊二烯基金属有机化合物的研究进展。
The progress on the study of doubly bridged bis(cyclopentadienyl) metal complexes is reviewed.
为准确估算异戊二烯的排放通量，建立其排放模式是非常必要的。
It is necessary to build a model to accurately estimate isoprene emission flux.
图1。有代表性的单萜烯类。显示了异戊二烯单元的一般结构特点。
Figure 1. Representative monoterpenes. Isoprene units are shown to indicate the common structural features.
均聚物的例子有单体为异戊二烯的天然橡胶以及单体为乙烯的聚乙烯。
Examples of homopolymers are natural rubber, whose monomer is isoprene, and polyethylene, whose monomer is ethylene.
研究表明，丁二烯聚合机理原则上同样适用于异戊二烯的负离子聚合。
The experimental results showed that the mechanism of anionic polymerization of butadiene was also fit for the anionic polymerization of isoprene.
剩余的异戊二烯则用以生产其它产品，包括胶水，纸尿裤和医用乳胶手套。
The rest goes into making other products, including glues, disposable nappies and surgical gloves.
前者是塑料的普通成分，后者则是研究者的专利秘密，可使二环戊二烯变硬。
The material relies on two substances: liquid dicyclopentadiene, a common ingredient of plastics, and a catalyst (the researchers 'proprietary secret) that causes dicyclopentadiene to harden.
异戊二烯单元以1,4 -方式连接并以顺式异构形式存在的一种聚异戊二烯。
A polyisoprene in which the isoprene units are joined in the 1, 4 -manner and in which they occur in the cis isomeric form.
探讨了双环戊二烯改性不饱和聚酯树脂的各种影响因素及其合成的主要工艺条件。
The various influencing factors and main synthesis processes of dicyclopentadiene modified unsaturated polyester resin are investigated.
二氧化双环戊二烯难于被胺或单独的酸酐所固化，但能很好的被酸酐与醇所固化。
Dicyclopentadiene dioxide was hardly cured by amines or acid anhydrides alone, but can be well cured by acid anhydrides mixed with alcohols.
介绍了用一步法、两步法合成甲基环戊二烯三羰基锰的过程，影响收率的主要因素。
The one step and the two steps used in the synthesis of MMT and their advantage and shortcoming are described.
树木分泌的天然化学物质异戊二烯和萜烯被认为可保护树叶免受过多热量和阳光的伤害。
Trees produce natural chemicals, called isoprene and terpene, that are thought to protect their leaves from too much heat and sunlight.
本文研究了在高压汞灯照射下，二苯甲酮和3,4 -聚异戊二烯间的能量传递机理。
This paper studied the energy transmission mechanism between benzophenone and 3, 4-polyisoprene which were irradiated by high pressure Hg lamp.
研究了水相悬浮法合成环氧化反式-1，4-聚异戊二烯（ETPI）的结构与性能。
Structure and property of epoxidized trans-1,4-polyisoprene(ETPI) by water phase suspension method was studied.
这些改良的大肠杆菌发酵生物质中所含的糖类以生合成异戊二烯，并以气体形式释放出来。
The modified organism ferments sugars in the biomass to produce isoprene, in such a way that it bubbles out as a gas.
还有个石油副产品是异戊二烯(译者注：橡胶基质)，用来生成汽车轮胎需要的合成橡胶。
One of these petroleum by-products is isoprene. This is used to make the synthetic rubber in car tyres.
研究了低相对分子质量反式1,4聚异戊二烯蜡(LMTPIW)在橡胶配方中的应用。
The application of low molecular weight trans 1, 4 polyisoprene wax (LMTPIW) to rubber compound was investigated.
甲基环戊二烯三羰基锰（MMT）对机动车排放及排放控制系统的影响一直是人们争论的焦点。
The effects of methylcyclopentadienyl manganese tricarbonyl(MMT) fuel additive on emission and emission control system of vehicles have ever been the focus of dispute.
重点介绍了金属茂的合成方法及环戊二烯环上的取代基、溶剂对合成及分离旋光性金属茂的影响。
The synthesis of metallocene, the effects of substitution in cyclopentadiene ring, reaction medium for synthesis and separation of chiral metallocene have been highlighted.
今天我们发现了一种制造更“绿色”轮胎的方法，即通过利用基因改良的细菌来生物合成异戊二烯。
Now a way has been found to make greener tyres by using genetically modified bugs to produce isoprene biologically.
桑福德先生认为，如果能轻而易举地获得源自生物的异戊二烯，那么工业生产还能在许多地方用到它。
If biologically derived isoprene becomes more widely available, Mr Sanford thinks, industry could find additional USES for it.
桑福德先生认为，如果能轻而易举地获得源自生物的异戊二烯，那么工业生产还能在许多地方用到它。
If biologically derived isoprene becomes more widely available, Mr Sanford thinks, industry could find additional USES for it.
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