乙炔

The combined TG-MS analysis showed that the gas products of the thermal decomposition of silver behenate were carbon dioxide,water,hydrogen,acetylene and some small molecule alkenes.

热重-差热分析-质镨联用的分析结果表明，山嵛酸银热分解的气态产物为二氧化碳，水，氢气，乙炔及一些小分子烯烃。

During the second transition about 231°C, a structural change took place, which corresponding to decomposition of silver behenate. The major thermal decomposition products are silver nanoparticles and behenic acid. The gas products from thermal decomposition of silver behenate were detected by MS. Carbon dioxide was first emerged, subsequently water, hydrogen, acetylene and some small molecule alkenes appeared.

采用MS对山嵛酸银在整个热分解过程中所释放出的气体产物的跟踪检测发现，首先是二氧化碳气体的放出，接着是氢气和水，随着温度的进一步升高，又伴随着乙炔和一些小分子的烯烃产生，当温度进一步升高到500℃左右时，被山嵛酸钝化的银纳米粒子逐渐失去了有机分子，最终的热分解产物为金属银。

In the second chapter, a rational synthetic route for enantiopure 2,2'-diethynyl-1,1 '-binaphthyl was established.

在论文的第二章，主要讨论了具有单一手性(R构型或构型的2，2'-二乙炔基-1，1'-联萘模板的合成。

In this paper,- and (5)-2,2'-diethynyl-1,1'-binaphthyl with highly stable chiral configurations were employed as structural templates, and a new type of helical cyclophane compounds-3 and-3 were synthesized in enantiopure form by the introduction of benzyl sulfone through Sonogashira coupling reaction, followed by the treatment of disulfone with lithium diisopropylamide.

基於2，2'-二取代的联萘衍生物在手性构型上高度稳定的特点，分别从光学活性的-和-2，2'-二乙炔基-1，1'-联萘结构模板出发，通过Sonogashira偶连反应导入苄基碸，然后用二异丙基氨基锂处理制得的联萘二碸成功地合成了一种新的螺旋环芳分子－对映异构体-3和-3。

From the optically active 2, 2'-dihydroxy-1,1 '-binaphthyl, through esterification, Kumada coupling, bromization, hydrolization and Wittig elimination reaction, 2,2'-diethynyl-1,1'-binaphthyl was obtained.

从光学活性的2，2'-二羟基-1，1'-联萘出发，经过酯化，Kumada偶联，溴化，水解和Wittig消除反应五个步骤，成功地获得了具有单一手性的的2，2'-二乙炔基-1，1'-联萘。

A sensitive method for the determination of acetaminophen was proposed on the basis of the electrochemical response of acetaminophen at an acetylene black electrode in the presence of cetyl pyridine bromide.

在溴代十六烷基吡啶存在下，研究扑热息痛在乙炔黑碳糊电极上的电化学行为，建立了一种简便灵敏的电化学分析方法。

Seven 1-phenyl-(4-pyridinyl)acetylene derivatives were conveniently synthesized in this paper using corresponding styrylpyridines as starting materials by bromination, rearrangement and debromination.

本文采用简单易行的方法从苯乙烯基吡啶类衍生物通过溴化、重排和脱溴化反应合成了7种苯乙炔基吡啶类单体，研究了它们在1mol/L盐酸水溶液中的光环加成反应。

Under UV irradiation, ordered diacetylene molecules can be polymerized and form polydiacetylene vesicle.

有序排列的联乙炔分子，在紫外光照射下发生聚合。

In this paper, Polyphenylacetylene of electroluminescent polymer and the synthesis and study of the current state and prospects were reviewed, as well as the problems put forward his own views.

文中对聚苯乙炔类电致发光聚合物的合成和性能及研究现状和前景进行了综述，并就其存在的问题提出了自己的看法。

This meter is suit oxygen, ethine, hydrogen and other high pressure decompress installment, has decompress and stead pressure function.

该仪表适用于氧气、乙炔、氢气等高压所瓶的减压装置，有降压和稳压两种作用。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。