报道了一种以表面活性剂、丙二烯二胺和柠檬酸、EDTA为主要组分的硫化亚铁清洗剂配方和其在炼油装置应用的情况。
A detergent for cleaning iron monosulfide was formulated with surfactant, diamino-propadiene, citric and EDTA, and its cleaning mechanism was discussed.
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.
相比之下，17-α雄甾二烯抑制人和鼠组织的肿瘤细胞增殖和介导肿瘤细胞的凋亡。
In contrast, 17 alpha androstenediol inhibits proliferation and mediates apoptosis in tumor cells of murine and human origin.
赤芍主要挥发成分为（Z, Z）-9, 12-十八碳二烯酸，正十六碳酸和2-羟基苯甲醛。
The main volatile chemical components of RPR are(Z, Z)-9,12-octadecadienoic acid, n-hexadecanoic acid and 2-hydroxy-benzaldehyde.
采用甲硫醇、呋喃硫醇、吡嗪、反-2，4-壬二烯醛和呋喃酮等主要的牛肉香气成分香原料，可以调配出香气逼真的炖牛肉香精。
Methanethiol, furanthiol, pyrazine, trans, trans-2,4-nonadienal and furfuran ketone were used to develop beef flavor.
这些石油副产品之一便是异戊二烯。
腈是一种丁二烯与丙烯腈的共聚物。
丙二烯是甲基乙炔的一种异构体。
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.
本文介绍了丁二烯球罐群安全隐患的清除方案及工程实施。
The authors make an introduction to the plan of improving the safety of the butadiene spherical tank group and its engineering practice.
合成橡胶是丁二烯（75％）和苯乙烯（25％）的共聚物。
Synthetic rubber is a copolymer of butadiene (75%) and styrene (25%).
由各种比例苯乙烯、丙烯腈和丁二烯组成的一类热塑性合成共聚物。
A type of thermoplastic synthetic copolymer composed of various proportions of styrene, acrylonitrile and butadiene.
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.
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.
在上述条件下取得了优异结果，丁二烯收率约为80%，选择性90%左右。
Under these conditions, an excellent yield of butadiene approximately 80% and selectivity about 90% can be obtained.
结果表明，二烯值大、酚含量低是加氢渣油催化裂化汽油诱导期短的主要原因。
Results show that the main causes of low induction period of cracked naphtha are the high diene number and low phenol content.
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.
在石油化学工业中所用的许多原料是不饱和烃类，如乙烯、丙烯、丁烯和丁二烯。
Many of the raw materials used in the petrochemical industry are unsaturated hydrocarbons, such as ethylene, propylene, butene and butadiene.
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.
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.
研究了某厂丁二烯精馏塔塔底控制回路目前存在的问题，提出了基于软测量的推断控制方案。
The existing problems in bottom tower control of butadiene rectifying tower in certain plant are investigated. The inference control strategy based on soft measurement is stated.
以100重量份的二烯橡胶为基准，芳香乙烯基聚合物的含量优选为5 ~ 150重量份。
An amount of the aromatic vinyl polymer is preferably 5 to 150 parts by weight based on 100 parts by weight of the diene rubber.
生产方法是乳液聚合，和苯乙烯-丁二烯橡胶的生产过程相似，得到“热”橡胶和“冷”橡胶。
Produced by emulsion polymerization in a similar way to styrene-butadiene rubber processes, yielding both "hot" and "cold" rubbers.
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.
对二甲基二烯丙基氯化铵与丙烯酰胺的共聚物PDA在合成、分析和应用方面的研究进展进行了综述。
The research progress in the preparation, analysis and application of the copolymer poly-dimethyldiallylammonium chloride-acrylamide(PDA)was reviewed in this paper.
对二甲基二烯丙基氯化铵与丙烯酰胺的共聚物PDA在合成、分析和应用方面的研究进展进行了综述。
The research progress in the preparation, analysis and application of the copolymer poly-dimethyldiallylammonium chloride-acrylamide(PDA)was reviewed in this paper.
应用推荐