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。
对异戊二烯及其影响因子进行了详细研究。
A minute study on isoprene and its affecting factors is made.
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.
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.
异丁烯和不大于3%的异戊二烯催化共聚所生成的合成弹性体。
A synthetic elastomer produced by catalytic copolymerization of isobutene with no more than 3% of isoprene;
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.
传统的异戊二烯生成方法通常是石脑油热分解或者C4蒸汽合成。
The traditional isoprene generation method is usually the naphtha or C4 steam synthesis thermal decomposition.
对于我国亚热带森林主要树种异戊二烯的排放速率进行了初步测定。
The emission flux of isoprene from major species in subtropical forest is also measured.
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.
属于制备聚异戊二烯的稀土催化剂及制法和制备聚异戊二烯的方法。
This invention belongs to rare earth catalyzer for preparing polyisoprene, and its preparation method.
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.
对掺用反式1，4 聚异戊二烯（TPI）的胎面和胎侧胶料进行了试验。
The trans 1,4 polyisoprene (TPI) containing tread and sidewall compounds were tested.
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.
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.
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.
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.
本工作首次制备了醇改性负载钛催化剂，并将其用于丁二烯和异戊二烯配位聚合。
Supported titanium catalysts modified by alcohols were prepared for the first time, and the modified catalysts were used for the coordination polymerization of butadiene and isoprene.
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.
并通过对裂解产物的分析研究了天然橡胶、异戊二烯橡胶和顺丁二烯橡胶的裂解机理。
The pyrolysis mechanism of nature rubber, isoprene rubber and butadiene rubber was analysis by pyrolysis production.
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.
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.
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.
研究环氧化反式1，4 聚异戊二烯（ETPI）在轮胎锦纶帘布层胶和钢丝带束层胶中的应用。
The application of epoxidized trans-1,4-polyisoprene(ETPI) in the nylon carcass ply compound and steel belt compound of radial tire was investigated.
使用G93算法，换算出相应异戊二烯和单萜烯的标准排放因子，并划分了这些排放因子的等级。
The conversion of relevant standard emission factors of isoprene and monoterpene were made using G93 arithmetic technique, and the grade of these factors was classified.
研究表明，该地区人工橡胶林异戊二烯的排放有明显的日变化，云和降水可以明显减小异戊二烯的排放。
The emission flux of isoprene in the rubber trees in wet season showed an obvious diurnal variation, and the clouds and precipitation could evidently decrease the emission flux of isoprene.
研究表明，该地区人工橡胶林异戊二烯的排放有明显的日变化，云和降水可以明显减小异戊二烯的排放。
The emission flux of isoprene in the rubber trees in wet season showed an obvious diurnal variation, and the clouds and precipitation could evidently decrease the emission flux of isoprene.
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