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The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测解聚产物是很高对苯二甲酸二甲酯(DMT)单体和乙二醇。

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The students are asked to prove the purity of copper.

要求学生们检验铜

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Results Pure flavonol and flavanonol were obtained by the column chromatography of polyamide.

果运用聚酰胺柱色谱法一次分离得高黄酮醇与二氢黄酮醇。

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The silver vase had been hallmarked at Birmingham.

这个银瓶是在伯明翰打上标记

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The 2,6 dipicrylamino 3,5 dinitro pyridine(PYX)pureness reference material had been certificated by potentiometric method.

用电位滴定法对2,6-双(苦氨基)-3,5-二硝基吡啶(PYX)标准物质进行测定。

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The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid. The method was characterized by fewer equipments, simple operation, low cost and quick yield.

采用硝酸分解法可制取高于99%三氧化二铟.本法具有设备少、操作简单、成本低、见效快等优点.

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Because the mature tissue of velvetleaf contains lots of secondary metabolites such as alkaloid and phenolic, it is difficult to obtain high purity DNA from mature tissue of velvetleaf.

摘要青成熟组织中酚类、黄酮类等次生代谢物较多,要从中提取出高DNA比较困难。

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The Spanish Cross in Bronze was die struck in tombak or bronzed brass and the Silver can be found both in hallmarked 800 grade silver and silver plated brass.

西班牙十字勋章是铜与锌合金或被镀青铜黄铜和银在青铜模子制.造,能发现品质800银,并且银上镀了黄铜。

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Medene collagen crystal eye angel mask have the character of breathing freely, keeping wet, well-merged with the biology, its potential involucra structure can deposited many more special substances.

美丹妮眼护天使采用高胶原蛋白配制而成,是目前国际上高档化妆品推崇美容科技成果。

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It is a convenient method to acquire a great number of highly purified Schwann cells by enzymolysis ,and fibroblastic cells were removed by using cytosine arabinoside .

酶消化法培养SC方法简便,可去除大部分成纤维细胞(FB),再用Ara-c化SC,获得SC数量多,高。

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Conclusion:The purified fusion protein has good fineness and hemolysis activity, the antibody titers initiated by the protein vaccine go with regulation and the immunoprotection is satisfied.

蛋白达到电泳级,且依然保持良好黏附活性,蛋白疫苗作用机体产生抗体水平符合抗体消长规律。

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They are the silent spectators of prakrti (matter or nature), which is composed of three gunas (dispositions): satva, rajas and tamas (steadiness, activity and dullness).

它们是帕克提(物质或自然)无声观众,是由三重根拿斯(部署)组成:萨特瓦,拉杰斯和塔玛斯(坚定性,活跃性和)。

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Etodolac was synthesized with 7-ethyltryptophol and methyl 3-oxopentanoate as the starting materials.Highly pure etodolac was obtained by purifying the crude product with a mixing solvent.

以7-乙基色醇和3-氧代戊酸甲酯为起始原料,以甲醇为溶剂,合成了依托酸.采用混合溶剂对粗品进行精制,得到了高依托酸.

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The improvement of the purity of fluorene is not dependent on the removal of acenaphthene and dibenzofuran, but dependent on the separation of other impurities.

提高主要不是依赖苊、氧芴去除,而是其它杂质分离。

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Through the simple method of CTAB, total DNA of velvetleaf was extracted from sprouts of velvetleaf in which there was a little secondary metabolites.

本研究利用黄酮等次生代谢物未大量合成幼芽为材料,采用简化CTAB法提取青总DNA,可以获得高、高产量DNA。

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Recent method of synthesizing 3,5-xylenol is sulpho alkaline fusion of dimethylbenzene,it is a very complicated procedure with serious pollution and low-pure products.

国内目前生产工艺是间二甲苯磺化碱熔法,该方法工艺过程复杂、污染严重,并且产品不高。

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The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.

试验果表明,其产品氧化锌可达99.6%以上,符合一级品要求。

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The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.

该粗品通过精制工艺改进,采用硫化钠和氢氧化钠混合物进行处理,得到≥99%O,O-二乙基硫代磷酰氯。

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Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,为98.5%.介绍了2-庚酮在相关领域中应用.

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Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.

严格控制反应条件,分离除去内消旋胱氨酸是制取高光学L-胱氨酸重要措施。

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Wetlands are important for improving the purity of the water too.

湿地对于提高水的纯度也很重要。

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《这个杀手不太冷》原声版

In June, we gave you the dope, it tests 100 percent pure.

六月份我们给你的时候,纯度还是百分之百。

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6 Minute English 六分钟英语

They may have had years of training to learn about the different types of wine and the individual flavours or aromas, known as notes.

他们可能已经接受了多年的培训,以了解不同类型的葡萄酒以及们各自的味道或香味,也被称为纯度

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华尔街日报

The traditional marketing strategy for bottled water as a premium product was all about purity.

传统的瓶装水作为高端产的营销策略全在于“纯度”。

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NPR音讯 2019年7月合集

The uranium is only enriched to about 3.5%. It cannot be used for a bomb.

浓缩铀的纯度只有3.5%左右。这一纯度不能用来制造炸弹。

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Scishow 精选系列

A hunk of pure iron, for example, doesn't tend to stay pure for very long.

例如,一大块纯铁不能长时间保持纯度

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科学60秒-科学美国人 2023年1月合集

Bottled water companies often brag about the purity of their drinks.

瓶装水公司通常夸耀自家水的纯度

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VOA Special 2023年12月合集

And they discussed the mineral content and purity.

他们讨论了矿物含量和纯度

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VOA Special 2024年6月合集

The purity must be high if it is to be used to carry electricity.

如果要用来导电,纯度必须高。

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昆虫王国第二季 (原声版)

This technique guarantees the purity of the silk.

这种技术能保证丝的纯度

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跟马修学英语

Butter was declared public enemy number one, in the 1950s, by heart doctors, as well as fitness fanatics, because this pure, unadulterated source of saturated fat was going to lead us all to an early grave.

二十世纪五十年代,黄油是心脏病医生和健身狂人公认的人类的公敌,因为黄油有纯度极高的饱和脂肪,这我们的寿命。

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心理学小课堂

Their fixation is with the quality and purity of their food to the point of cutting out food groups, like sugar, carbohydrates and meat, because they aren't pure enough.

他们的注意力集中在食物的质量和纯度上,以至于不吃糖、碳水化合物和肉类,因为们不够纯净。

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宇宙的奇迹

This is about 85% pure gold, but it could also be found like this, and this is a gold nugget that was found in a river, on a river bed, and it's a heavy piece of gold.

这是纯度为 85% 的金矿石,有时还可能是以这种形式出土,这是在河里发现的一块天然金块,在河床上找到的,很大的一块金子。

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经济学人(汇总)

Jewellery is weighed, then scratched on a small square stone. Acid and salt are applied to the scratch, to test purity; 5 to 10% of items fail.

先给珠宝称重,然后在一块小型方形石头上划过,这一步骤中需要用到酸和盐,以检测黄金的纯度;5到10%的物没能通过检测。

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经济学人-科技

In addition, though, it is doped with powdered quartz (the pure stuff, rather than the tainted variety that makes up most sand) and various reinforcing metals and fibres.

但UHPC中还配有石英砂及各种加固材料和纤维。这种石英砂不同于其他大量混有 沙子的石英砂,纯度高达100%。

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VOA常速英语_中东

The UN's nuclear watchdog, the International Atomic Energy Agency said in its August report, that Iran was continuing to enrich uranium up to 60% Purity short of 90% weapons grade fuel.

联合国的核监督机构国际原子能机构在8月份的报告中说,伊朗继续进行纯度高达60%的铀浓缩,纯度低于90%的武器级燃料。

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VOA Daily Standard 2023年9月合集

The report by the International Atomic Energy Agency says Iran has 121.6 kilograms, or 268 pounds, of uranium enriched up to 60 percent, a far slower growth than in previous counts.

国际原子能机构的这份报告说,伊朗拥有121.6公斤(268磅)纯度为60%的浓缩铀,这一增长速度远远低于之前的统计。

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纽约时报 (New York Times)

A clerk took the small pile and began testing it, filing away at the pieces and putting them under a special X-ray-like machine to test their purity.

一名店员拿走那一小堆金子,开始检测,他锉下一些碎屑,放入一台类似X光的特殊机器检验纯度

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BBC 听力 2014年9月合集

In Canada, the mayor of Toronto Rob Ford who made global headlines for confessing his addiction to crack cocaine has dropped out of the race of re-election.

在加拿大,因承认对高纯度可卡因上瘾而登上全球新闻头条的多伦多市长罗伯·福特(Rob Ford)退出连任竞选。

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VOA Special 2022年8月合集

Materials from the mine will be sent to Estonia, which has one of only two plants outside China that processes rare earths to a high degree.

该矿的原料将被运往爱沙尼亚。爱沙尼亚是除中国之外拥有高纯度稀土加工厂的国家之一。

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