查询词典 distillation

Compareing with essential oil of the steam distillation method and the bensine solvent extraction method through GC-MS analysis .The result showed that:the essential oil principal constituent extracted by benzine is camphene,a-pinene,bornyl acetate, limonene, 1-methyl-4-(1-methylethyl)-1,4-cyclohexadiene, myrcene, caryophyllene, borneol.

对巴山冷杉针叶水蒸气蒸馏和石油醚萃取所得精油的GC-MS 分析对比研究结果表明：石油醚萃取精油主要成分为：莰烯，a-蒎烯，乙酸龙脑酯，柠檬烯，1-甲基-4-异丙基-1，4-环己二烯，月桂烯，石竹烯，龙脑。

Now everyone at home is to have a camphor ball camphor roots, stems, branches, leaves made of distillation.

现在大家家里都有的樟脑丸就是香樟树根、茎、枝、叶蒸馏而成的。

Were extracted by sterilize distillation and analyzed by GC-MS, 69 constituents were identified according to NIST MS database, the main constituents were thymol, carvacrol, p-cymene, caryophyllene, terpineol. 27 constituents from this plant were discovered for the first time. The phytochemical study of this plant was also conducted.

通过水蒸气蒸馏法提取牛至挥发油，利用GC-MS现代技术分析，通过NIST质谱库检索，鉴定了挥发油中的69种成分，其主要成分为麝香草酚、香荆芥酚、对聚伞花素、石竹烯、松油醇等；其中27种化合物为首次从该植物中鉴定。

However, carvone thermally decomposes at higher temperatures; therefore, a vacuum distillation is necessary.

可是，香芹酮在较高的温度下会发生热分解；因此，必需用真空蒸馏法。

Run infrared spectra of the lim onene and carvone fractions obtained by distillation.

红外卡的盐窗上加入几滴的液体作红外分析。

Plug in your data and determine the value of xcarvone for the limonene and carvone distillation fractions and the oil itself. Compare these results with those obtained by GC.

把你的数据组合起来，然后确定在柠檬烯，香芹酮馏份和油本身的xcarvone的值，将这些数据和气相色层分析的数据比较一下。

You will separate the carvone from the higher-boiling and lower-boiling impurities, via a vacuum distillation.

你将会通过真空蒸馏法，把香芹酮中较高沸点和较低沸点的杂质分离开。

From the gas chromatography, report the percentages of limonene and carvone in your original sample and in the fractions following distillation.

从气相色层析分析中，回报在你的原样品和通过蒸馏所得的馏份中所含柠檬烯和香芹酮的百分含量。用蒸馏法分离这些组份的效率有多高呢？

Thermometer adapter, thus the progress of carvone distillation can be r eadily monitored.

察香芹酮的蒸馏过程。在柱子顶部温的改变速也是十分明显的。确保在你的实

DAY 1: Distillation and Gas Chromatography: WORK in PAIRS. Split evently the limonene and carvone fractions for the derivatization step.

第一天：蒸馏和气相色层分析：以对为单位工作，一组分一个柠檬烯一组分一个香芹酮馏份作为衍生化步骤

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。