有奖纠错
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Limonene needed in recycling foamed polystyrene was extracted from the ear of schizonepeta tenuifolia using ligroin.

本文研究从荆芥穗中提取回收聚苯乙烯所需的柠檬烯,其方法是取。

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The reaction between polystyrene having oxazoline groups(RPS) and chlorinated polyethylene(CPE) was investigated by FTIR, DSC methods.

用FTIR、DSC等方法研究了含恶唑啉官能团的聚苯乙烯(RPS)与氯聚乙烯(CPE)之间的反应。

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The benzene ring and alkene structural group are much more stable than structural group of sulfoacid for the carbonifying process of polystyrene.

在碳过程中,聚苯乙烯阳离子交的苯环结构和烯烃基团比磺酸基团稳定。

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In this paper, bromized polystyrene flame retardant was synthesized by electrophilic substitution of waste polystrene with bromine using aluminium ehlorid as catalyst.

本文利用三氯铝作催,废聚苯乙烯与溴发生亲电取代反应合成溴聚苯乙烯阻燃

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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在活性种的终端发生了聚合,所得产物中环氧端基与聚合产物的摩尔比可根据需要进行调节。

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Scishow 精选系列

Take " expanded polystyrene" , for example, which you know as " Styrofoam" .

比如说“发泡聚乙烯”,也就是大家知道的“泡沫聚乙烯”。

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经济学人-文艺

Tastes have evolved: polystyrene cups have long replaced elegant coffee sets in many situations.

聚苯乙烯杯子在许多情况下早已取代了优雅的咖啡具。

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BBC Ideas 精选(双语)

Now it's mainly plain paper and polystyrene, but the skillful wrapping and excitement of unwrapping remains.

现在主要的包装材料是普通纸张和聚苯乙烯,但巧妙的包装和拆开包装时的兴奋感仍然存在。

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TED演讲(音频版) 2020年1月合集

Polystyrene can take thousands of years to degrade.

聚苯乙烯可能需要数千年才能降解。

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自然:科技

In fact all it is, is a tiny polystyrene bead.

事实上,它就是一个微小的聚苯乙烯珠。

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Crash Course 综合篇

Polymerize it, polystyrene. Make a foam out of it, Styrofoam.

聚合它,聚苯乙烯。 用它做泡沫, 聚苯乙烯泡沫塑料。

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TED演讲(视频版) 2022年7月合集

Polystyrene ceiling tiles, no natural daylight, the least inspiring place to meet people.

聚苯乙烯天花板,没有自然采光,是最不鼓舞人心的会面场所。

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TED演讲(视频版) 2019年11月合集

Now, if you're wondering about that polystyrene clamshell, yeah, we ditched it.

现在,如果您想知道那个聚苯乙烯翻盖,是的,我们抛弃了它。

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TED-Ed(视频版)

In the 1920s, researchers first commercially developed polystyrene, a spongy plastic used in insulation.

在 1920 年代,研究人员首次商业开发聚苯乙烯,一种用于绝缘的海绵塑料。

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透视百科影视类

They then printed just the Giga's head and cut it out of polystyrene.

然后他们只打印了 Giga 的头部,并用聚苯乙烯将其切割出来。

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科普小

It was made from polystyrene which was strong, cheap and transparent, allowing the ink level to be seen at all times.

它由聚苯乙烯制成,坚固、廉价、透明,可以随时看到墨水量。

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自然:科技

The speaker's create areas of high pressure that can trap a polystyrene bead and suspend it in midair.

扬声器会产生高压区域,可以捕获聚苯乙烯珠并将其悬浮在半空中。

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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,于是一个全新的研究方向就出现了。

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BBC 听力 2023年9月合集

There are also new bans in parts of the country on polystyrene packaging and microbeads that are found in personal care and cleaning products.

澳大利亚部分地区还出台了新的禁令,禁止聚苯乙烯包装,以及在个人护理和清洁产品中存在的塑料微球。

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Scishow 精选系列

While it can technically be recycled, it's not particularly practical, because a truck full of lightweight, air-filled Styrofoam doesn't melt down into a lot of polystyrene.

尽管从技术角度能被回收,但是不是特别实用,因为一卡车又轻又蓬松的泡沫塑料并不能够熔化成大量的聚苯乙烯。

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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”计划通过兜售和塑料业每年尽可能多地回收35亿聚苯乙烯杯而成立。

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科学:动物学

Organic rafting materials such as trees and root masses have far shorter lives at sea, when compared to synthetic materials such as fiberglass or polystyrene.

与玻璃纤维或聚苯乙烯等合成材料相比,树木和根系等有机漂流材料在海上的寿命要短得多。

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VOA视频精选

It’s collecting all sorts from sort of tiny bits, plastic needles and bits of polystyrene, all the way up to bits of broken bucking plastic bottle as well.”

它收集各种各种各样的东西,从细小的塑料碎片、聚苯乙烯碎片和各种各样碎掉的塑料瓶。

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遇见你之前 | Me Before You

Beside us, dotted along the stands and clutching polystyrene cups of coffee and hip flasks, were men in tweedy suits and women in smart padded coats.

在我们旁边, 散布在看台上, 手里拿着聚苯乙烯杯咖啡和酒壶,是穿着粗花呢西装的男人和穿着漂亮的衬垫外套的女人。

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BBC随身英语(官网版)

What throws a spanner in the works is the layer of polyethylene that makes the cup waterproof, and the lid, which is most often made of polystyrene.

在工作中投入扳手的是使杯子防水的聚乙烯层, 以及通常由聚苯乙烯制成的盖子。

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