乙炔

DOT regulations require that the filler of all acetylene cylinders undergo a one-time inspection and requalification.

DOT规范要求所有的乙炔钢瓶的填充物要经过检查和重新认定。

According to the gas chromatographic analysis of the insulating oil, this paper probes into the causes of the superstandard of the acetylene content in 35 kV transformer oil, and makes the hanging-cover check and treatment of s ealing members ageing problem, which guarantees the normal operation of the tra nsformer.

根据绝缘油气相色谱分析，判断出一例35kV变压器油中乙炔含量超标的原因，并对密封件老化问题进行了吊罩检查和处理，保证了变压器的正常运行。

Thestercoselectivity of the reaction of propargylide was different completely from that of the reactionof telluronium 3-trimethylsilylalltide with α,β-unsaturaled ketones and trans-trimethysilylacetylenyl-l-benzoyleyelopropane derivatives were obtained.

发现这一反应的立体化学与同样条件下含硅烯丙基碲叶立德和α，β-不饱和酮反应的立体化学完全不同，得到的是又式-2-三甲基硅基乙炔基-1-酮基环丙烷衍生物。

Poly-phenylene vinylene is not only a kind of conducting material but a fine kind of electroluminescent material.

聚对苯乙炔不仅是一种导电高分子材料，同时也是一种性能良好的电致发光材料。

The structures and properties of the precursor polymer of poly(2,5-thienylene vinylene) synthesized in water or in methanol-water mixture were studied.

对在水和甲醇－水混合介质中合成的聚噻吩乙炔前聚物的结构和性能进行了研究。

Poly(2,5-didodecyloxy-p-phenylene vinylene) was prepared through chlorine precursor route followed by the thermal teratment.

采用含氯的前聚物路线合成了聚（2，5－二对苯乙炔）的前聚物，经热处理得到了具有共轭结构的聚合物。

Preparation and Photoelectric Properties of Poly (2, 5-Dibutyloxy)-1, 4-Phenylene Vinylene

CEPS 思博网--文章书目；-1页数：4 需求点数：16 电子全文：请登入。篇名聚（2，5-二丁氧基）对苯乙炔的制备及其光电性能

Spirobifluorenylene, ethynylene, and vinylene groups as the bridge are introduced to connect both truxene moieties to understand the effect of the large steric chromophores on the properties of the desired materials.

9，9'- Spirobifluorenylene，炔桥，和乙炔团体的桥梁，介绍了连接两个truxene基团，以了解生色团的大型立体效应对所需材料的性能。

EVA/LDPE/ CB conductive foam was made of EVA and LDPE as matrix,HG-1P CB and ACET CB as conductive filler,AC as foamer and DCP as crosslinker.

文章以乙烯-乙酸乙烯酯和低密度聚乙烯为主基体，特导炭黑(HG-1P)和乙炔炭黑为导电填料，偶氮二甲酰胺为发泡剂，过氧化二异丙苯为交联剂，制备了EVA/LDPE/炭黑导电泡沫复合材料。

Including high temperature for the pyrolysis of natural gas to produce carbon black and acetylene; steam reforming of natural gas or partial oxidation of natural gas, synthetic gas can be obtained; natural gas through chlorination, sulfide, nitrification, ammoniated oxide, oxidation can be obtained A N all kinds of derivatives; in the wet gas ethane, propane, butane and natural gas liquid condensate, and so on, the steam cracker or pyrolysis to produce ethylene, propylene and butadiene; dehydrogenation of butane oxidation or produce small Diene or acetic acid, methyl ethyl ketone, and maleic anhydride, and so on.

包括在高温下进行的天然气热裂解，主要生产乙炔和炭黑；天然气蒸汽转化或天然气的部分氧化，可制得合成气；天然气经过氯化、硫化、硝化、氨化氧化、氧化可制得甲烷的各种衍生物；湿性天然气中的乙烷、丙烷、丁烷和天然气凝析液等，经蒸汽裂解或热裂解可生产乙烯、丙烯和丁二烯；丁烷脱氢或氧化可生产丁二烯或醋酸、甲基乙基酮、顺丁烯二酸酐等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。