Objective : To extract and determine naphtha in Eupatorium fortune.

1、

Mix pure alcohol and naphtha in a ratio of 3:7.

可以把纯酒精和挥发油以三比七的比例混合.

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2、

The bases of this substance is naphtha, which has a very strong effect for health care.

此物质的主要成分是挥发油, 具有很强的保健功效.

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3、

The aromatic hydrocarbons content in naphtha was analyzed by a chemical reaction method.

用化学分析方法测定了工业用石脑油中芳香烃的含量.

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4、

Finally, the solubility of methyl chloride in solvent naphtha was mensurated to accord to industrial application.

最后, 为了更接近工业应用的要求,对一氯甲烷在两种不同组成的溶剂油中的溶解度进行了测定.

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5、

In contact with a hot surface, naphtha petroleum fractions crack to produce ethylene and propylene.

石脑油馏份与一个热表面接角,就裂解而得到乙烯和丙烯.

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6、

Various solvent naphtha fraction generally have to go through refining.

各种溶剂油馏分一般都需要经过精制加工.

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7、

The Naphtha Stipper Reboiler duty is not decreased proportionally to the laden methanol to be stripped.

石脑油汽提塔再沸器的负荷不是与被汽提的富甲醇按比例减少.

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8、

The article introduces development status of solvent naphtha productive technology both home and abroad.

介绍了国内外溶剂油生产技术的发展现状.

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9、

Methods: Apply microwave extraction in determining content of naphtha in Eupatorium Fortune.

方法: 运用微波技术对佩兰中挥发油的含量进行测定.

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10、

Solvent naphtha is one of the five broad areas of petroleum products.

溶剂油是五大类石油产品之一.

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11、

The copper belt corrosion was caused by H 2 S and active sulfur in naphtha.

证明了铜丝带腐蚀是由石脑油中的H2S和活性硫引起的.

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12、

The technical features, process design and commercial application of FDFCC cracked naphtha olefin reduction were described.

FDFCC工艺是降低催化汽油烯烃含量的有效技术.论述了该工艺的技术特点、流程设计和工业应用情况.

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13、

A marble-sized ball, originally of camphor but now of naphthalene, stored with clothes to repel moths.

用来使蛀虫远离储存的衣服的樟脑或萘的小圆球.

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14、

The p dichlorobenzene and naphthalene in mothproofing agent was determined by infrared spectroscopy.

用红外光谱法测定了防蛀剂中对二氯苯和萘的含量.

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15、

The development condition and the problems in practice of Naphthalene series superplasticizer were also analysed.

分析了萘系高效减水剂的发展状况及应用中存在的问题.

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16、

For production of industrial naphthalene, the Coking Works of Anyang Iron & Steel Group Co.

安钢焦化厂工业萘生产系两炉两塔工艺流程,过程复杂,控制参数多,指标严格.

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17、

Dispersants such as lignin type, naphthalene sulfonate-formaldehyde condensates and polycarboxylic acids were introduced.

介绍了木质素类分散剂、萘磺酸甲醛缩合物和聚羧酸系分散剂.

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18、

The purity of refined naphthalene could be more than 99.5 % by said fractional crystallization process.

通过分级结晶提纯过程,可获得纯度达到99.5%以上的精萘产品.

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19、

Oil and Lubricants, Valves, Pipes and Pipe Fittings Naphthalene, Valves, Pipes Fittings Oil and Lubricants.

采购产品油和润滑物, 阀门, 管和管配件, 装阀门, 管配件,油和润滑物.

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20、

In fact, camphor and naphthalene balls are different in nature.

事实上, 樟脑和臭丸在性质上是不同的.

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