查询词典 isoprene

Breath Tests ; Schizophrenia ; Gas Chromatography-mass Spectrometry ; Pentene ; Isoprene ; Carbon Disulifide

呼吸试验；精神分裂症；气相色谱-质谱；戊烷；异戊二烯；二硫化碳

The C 5 Fraction derived from ethylene steamcracker contains some very useful components, isoprene, cyclopentadiene and piperylene .

来自裂解乙烯的 C5馏份含有非常有用的化工原料——异戊二烯、环戊二烯、戊间二烯。

The application markets of three kinds of isoolefines(isoprene, cyclopentadiene ,piperylene) from the cracking C5 fractions and their downstream derivatives were reviewed.

着重评述了裂解C5馏分资源中3种异构烯烃(异戊二烯、环戊二烯和间戊二烯)及其下游衍生物的应用市场，并剖析了我国裂解C5资源的利用现状及应用前景。

Comparison of inhibitors for anti-polymerization of isoprene, such as NaNO2, p-tert-butylcatechol, N-methyl pyrrolidone and paradioxybenzene, was carried out using polymer segregation process and the results showed that TBC was the best one.

采用聚合物离析法比较了亚硝酸钠（NaNO2）、对叔丁基邻苯二酚、N-甲基吡咯烷酮、对苯二酚对异戊二烯的阻聚效果，发现TBC阻聚效果最好。

Isoprene rubber was prepared with titanium catalyst modified by diphenyl ether ,and the effects of addition orders of various catalytic component on the monomer conversion,gel content and relative molecular mass were discussed in detail.

用二苯醚改性钛系催化剂合成了异戊橡胶，讨论了催化剂各组分加料顺序对单体转化率、产物凝胶含量和相对分子质量的影响。

In order to decrease copolymerization loss of isoprene during thermal dimerization of cyclopentadiene in C5-fraction,the effect of three inhibitors,diethylhydroxylamine,p-tert-butylcatechol and o-nitrophenol,on dienes' polymerization in the process was investigated by experiment with sealed glasstube.

为减少C5馏分环戊二烯热二聚过程中异戊二烯的聚合损失，采用封管实验方法考察了添加阻聚剂二乙基羟胺、对叔丁基邻苯二酚、邻硝基苯酚对热二聚过程中各二烯烃组分聚合程度的影响。

Guenther A%BBaugh%G Brasseur Isoprene emission estimates and uncertainties for the central African EXPRESSO study domain 10.1029/1999JD900391 Journal of Geophysical Research , 1999,D23

白建辉%王明星森林排放非甲烷碳氢化合物的初步研究大气科学， 1998，2

Most components of essential oils are terpenes that contain multiples of a five carbon structural unit, the isoprene unit Fig.

精油中大部份的成份是由多个五个碳结构单元，即异戊二烯单元组成的萜烯类图1

By splicing in genes from other bugs, the company was able to engineer synthetic metabolic pathways—ones that do not exist in nature—that enable the bacteria to produce isoprene from the sugars found in plant materials such as sugar cane, corn cobs and switchgrass, a tall-growing variety native to North America.

Genencor的科学家们通过将大肠杆菌的基因与其它菌类基因接合，则能研发出前所未有的代谢合成途径，使细菌能从植物所含的糖类中制造出异戊二烯，这些含糖植物包括甘蔗、玉米棒和北美特有的变异品种柳枝稷等。

The application of liquid isoprene rubber partly replacing NR by equal weight in bead filler of PC tire was investigated.

研究液体聚异戊二烯橡胶等量部分替代NR在轿车轮胎三角胶中的应用效果。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。