异戊烯

On the basis of transmission and conservation of solar visible radiation and the analysis on observation data, an empirical model of isoprene emission was built up.

基于可见光辐射传输与守恒的观点，在观测数据的基础上建立了异戊二烯排放通量的经验模式。

Isoprene is a monomer, which is a substance whose molecules can be linked together chemically to form a polymer.

异戊二烯是一种单分子物体，该物质的分子可以通过化学反应联在一起，从而形成高分子聚合体。

Latex, a material obtained from rubber trees, is a natural polymer of isoprene.

从橡胶树中获得的胶乳是一种天然的异戊二烯聚合物（就是我们所说的天然橡胶）。

ExxonMobil Chemical offer s a range of polymer viscosities and cure responses, reflecting molecular weight and isoprene level.

埃克森美孚化工可通过调整分子量和异戊二烯含量，提供不同聚合物粘度和硫化特性的产品。

To help mitigate this shortage, Eastman Chemical Company offers a new formulation strategy, which can reduce the use of isoprene by more than 50 per cent in HMPSA's.

为了帮助缓解这种供不应求的情况，伊士曼化工公司提供了一个新制订的策略，可以减少超过百分之五十的异戊二烯用热熔压敏胶的。

The kinetics of the bulk precipitation polymerization of isoprene with the supported titanium catalyst was studied at 0-30℃.

采用负载钛催化剂，在0～30℃下对异戊二烯本体沉淀聚合的动力学进行了研究。

Based on GC and GC-MS analyses, the geochemical characteristics of these typical deep viscous oils are listed as follows:(1) strong preference of even n-alkanes over odd n-alkanes;(2) strong preference of phytane over pristane, i. e. Pr/Ph ratio＜＜1;(3) high abundance of gammacerane relative to C〓hopanes;(4) much more amounts of C〓 pentakishomohopanes than C〓 tetrakishomohopanes and even C〓 trishomohopanes.

罗家—垦西地区稠油饱和烃色谱、色谱-质谱分析结果展示：(1)正构烷烃具有明显的偶奇优势；(2)类异戊二烯烷烃具有较强的植烷优势，姥姣烷/植烷比值远小于1；(3)伽玛蜡烷相对含量(相对于C30藿烷)普遍很高；(4)C35升藿烷明显高于C34、甚至C33升藿烷；表现出膏盐湖相生物标志物的组成特征。

Cholesterol contributes to the generation and development of atherosclerosis while non sterol isoprenoids play a role in regulation of cell proliferation, signal transduction and ge...

胆固醇在动脉粥样硬化的发生、发展中起重要作用，而异戊二烯则参与细胞增殖调节、信号转导及肿瘤发生过程。目前，该酶已成为一些有效的抗动脉粥样硬化药物治疗的靶点。

The oligomerization of isoprene with titanium tetrachloride as catalyst and alkylaluminium chlorides as promotor was studied, and especially the effects of the reaction conditions on the synthetic activity and selectivity of dimer and trimer were investigated in detail.

研究了以四氯化钛为主催化剂，以烷基铝为助催化剂催化异戊二烯的低聚反应，详细考察了各种反应条件对催化合成二聚体及三聚体的活性和选择性的影响。

The effect of liquid isoprene rubber on properties of NR/BR compound,physical properties and thermal air aging property of its vulcanizate was investigated and compared to that of aromatic oil.

以液体聚异戊二烯橡胶为反应型增塑剂，研究LIR对NR/BR混炼胶性能、硫化胶物理性能和耐热空气老化性能的影响，并与添加芳烃油的NR/BR并用胶进行对比。

We are in a real jam.

我们的麻烦大了。

Hey, it's Ahmet from India, that foreign exchange guy.

看，那是印度的阿曼特，国际交换生