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35. Ethylene and trans-dichloroethylene are both inactive in the infra-red in this region .

乙烯和反式二氯乙烯在红外光谱的这个区域都无活性。

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Poly(vinyl alcohol)(PVA)-based polyanion was prepared by esterification of PVA with sulfuric acid.

硫酸与聚乙烯醇(PVA)经酯制备PVA聚阴离子电解质。

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Briefly introduced the production method of balanced oxychlorination producing Vinyl Chloride Monomer(VCM).

介绍了平衡法生产氯乙烯(VCM)的生产方法。

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This polythene sheet should serve to keep out the rain for a while.

乙烯塑料应该可以挡一会儿雨。

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Made of shaping Polytetrafluorethylene Resin by moulding in ordinary temperature then through high heat sintering.

将聚四氟乙烯树脂在常温下用模压法成型后再经高温烧结制成。

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Using self-prepared sodium naphthalide solution,PTFE micropore membrane was modified to improve its wetness and adhesiveness.

用自制的钠—萘处理液,改性聚四氟乙烯(PTFE)微孔膜,改善薄膜表面的润湿性和粘合性。

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Epoxides, episulphides and ethylene imines also polymerize via similar cyclic onium ion mechanisms.

合物,合物和乙烯亚胺也可以按类似于?胱拥幕?理进行聚合。

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This paper discussed three methods of producting vinyl etherspreparation from acetylene,dehydrohalogenation and acetals.

论述了乙烯基醚类合物的三制备方法乙炔法、脱卤氢法和缩醛热分解法。

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The grey vinyl floor gave way to carpet tiles.

灰聚乙烯基地面换成了方块地毯。

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Conclusions The facial appearance is improved by the above operations in cases who have worn artificial eye a long time, particularly the insertion of Medpor for correction of lower lid chalasis.

结论通过上述手术可使长期配戴义眼患者的外观改善,特别是聚乙烯复合体眼睑插片用于治疗下睑松驰无力临床疗效满意。

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The Brief Analysis of Marketing : The chloroethylene is the main material for the production of koroseal and its market supply and demand change along with the development of chlorine.

乙烯是生产聚氯乙稀树脂的原料,它的市场供需随着聚氯乙稀的发展而变

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Three-dimensional flow field in the elutriator of polythene packed system is simulated based on the standard k-e model provided by FLUENT, is studied firstly to improve the separation efficiency.

为进一步提高聚乙烯粒料包装系统淘析器的分离效率,对系统内气相流场进行了研究和分析。

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PVC, Teflon and fluorion diaphragm were found to be better than glass as materials of diaphragm cell for their advantages in corrosion resistance as well as less electric resistance.

以聚氯乙烯、聚四氟乙烯和全氟离子隔膜为材料的套管式隔膜电解槽具有隔膜亲水性强、电阻小、耐碱液腐蚀、耐高铁酸盐等优点,与平板式隔膜电解槽采用的普通玻璃和高硼硅玻璃相比是更加理想的电学合成高铁酸盐的电解槽及隔膜材料。

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Co-gasification of Huainan coal, waste wood and waste polyethene (PE) to produce fuel gases with high H2 was carried out on a fluidized bed reactor in out laboratory.

开展了利用煤、废木屑和聚乙烯废料进行共气以制备富氢燃料气的研究。

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Introduces how to synthesize acrylic acid, acrylate and phenylethene quadripolymer into alcohol-soluble acrylic resin and use it as a link stuff to prepare flexible relief block printing ink.

叙述了丙烯酸、丙烯酸脂、苯乙烯四元共聚合成醇溶性聚丙烯酸脂类的方法,并以其为连结料制备柔性凸版油墨。

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The results showed that Abscisic acid (ABA) and ethrel could improve the single cell area of wheat starchy endosperm, thus affect the quality and grain weight of wheat.

结果表明乙烯和ABA均能提高小麦胚乳的单个细胞大小,从而影响小麦的粒重和品质。

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This article analyze the condition of demethanizer after revamping. The operation state afterwards the revamp is summarized and further optimization of the demethanizer is given in the paper.

通过乙烯装置脱甲烷塔系统改造后的运行状况的分析,对脱甲烷塔改造后的运行状态进行了总结,并为更进一步的优工艺条件提出措施。

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This article analyzes main factors that affect the actual operation of Demethanizer,and discusses the problems existing in the Demethanizer after the revamp of ethylene plant in Fushun,CCPC.

分析了影响中国石油抚顺石分公司乙烯公司乙烯装置脱甲烷塔运行的因素,并针对乙烯装置改造后脱甲烷塔存在的问题进行了探讨。

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Catches an illness the flowering branch to have the mutual infectiousness, but died of old age the flowering branch is easy to have the ethylene acceleration deterioration.

染病花枝具有相互的感染性,而凋谢的花枝易产生乙烯加速衰败。

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Results indicate interestingly that the double bond of GMA polymerized with polystyryl carbanion and the molar ratio of epoxy end group and polystyrene oligomer can be adjusted.

在GMA与聚苯乙烯阴离子反应的过程中,GMA在活性的终端发生了聚合,所得产物中端基与聚合产物的摩尔比可根据需进行调节。

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科学60秒 听力 2015年1月合集

Meaning they release ethylene gas as they mature—and the gas in turn accelerates ripening.

这其妙在于随着这些果实成熟会释放乙烯,而乙烯反过来会加速果实成熟。

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PBS英语讯息

The styrene gas left dozens unconscious in the street.

在大街上,苯乙烯气体让大量居民失去意识。

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机智生活百科

Just like ethylene, natural gas is known to increase the ripening process.

就像乙烯一样,众所周知,天然气也会加快蔬果成熟。

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VOA Daily Standard 2019年3月合集

That's because it's supposed to not be. Vinal? Laser cut trim?

这是因为本来就没照历史上服饰去设计。聚乙烯醇纤维?激光修边?

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剑桥雅思听力全真试题 5

The Save-a-Cup scheme was set up by the vending and plastics industries to recycle as many as possible of the three-and-a-half billion polystyrene cups used each year.

“节省杯子”计划通过兜售和塑业每年尽可能多地回收35亿聚苯乙烯杯而成立。

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雅思听力最新机试真题

But they're all big metal ones, I want little ones, small, vinyl-covered multi-colored ones.

但是它们都是大金属,我想要小乙烯那种彩色

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Vox 观点

And they were still in everything from refrigerators and air conditioners and styrofoam.

它们仍然存在于冰箱、空调和聚苯乙烯泡沫塑等各种

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自然百科

And one thing they knew to do is put Teflon on that whole balloon, and the balloons worked perfectly for two days just as designed.

他们知道只有一件要做事,就是把聚四氟乙烯放在整个气球上, 就像设计那样,气球工作两天。

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Scishow 精选系列

The only way to store these sorts of substances is with teflon.

储存这唯一方法是使用聚四氟乙烯

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随身英语双语版

These can break down polyethylene, a very common plastic that normally degrades over many years.

它们可以分解聚乙烯——一种很常见,通常需要很多年才能降解。

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大风哥带你看电影学英语

So Schultz will create fake ones out of vinyl.

所以舒尔茨用乙烯基做了假袋子。

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连线杂志

On the backend, they normally have a vinyl top, at least in the States.

在后端,他们通常有一个乙烯基顶部,至少在美国是这样。

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PBS趣味科普

Number 3 is plastic like PVC pipes, and this is just not recycled.

第三种是塑,就像聚氯乙烯管道一样,这是不可回收

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Asap SCIENCE 精选

For example, when fruits start to ripen, they release a chemical called ethylene.

例如,当水果开始成熟时,它们会释放一种叫做乙烯化学

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Reel知识卷轴

Coatings is a big category and you can coat a pan with teflon or non-stick.

是一个很大别,你可以在平底锅上涂上聚四氟乙烯或不粘剂。

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TED-Ed(视频版)2020年9月合集

Soldiers wore new plastic helmet liners and water-resistant vinyl raincoats.

军人头戴有塑胶衬里头盔, 身穿防水乙烯基雨衣。

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VOA Special 2022年10月合集

Around one-third of plastic waste is polyethylene.

大约三分之一垃圾是聚乙烯

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生活大爆炸 第2季

All right, what if we use this two-inch PVC to reinforce the center cross-support?

,如果我们用这两英尺聚氯乙烯来改造心支撑结构怎样?

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当月 CNN 10 学生英语 2020年10月合集

But then it was discovered in 2015 that these little grubs could eat polystyrene and a whole new line of research opened up.

但是在2015年,人们发现这些小东西可以吃聚苯乙烯,于是一个全新研究方向就出现了。

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CNN 10 学生英语 2022年11月合集

That's why a lot of times when people are like, hey, you want to ripen something, put it in a bag with a banana, because bananas produce a lot of ethylene.

这就是为什么很多时候,人们会说,嘿,想让什么东西成熟,就把它和香蕉放在一个袋子里,因为香蕉会产生大量乙烯

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