汽油是挥发性物质。
一种分离挥发性物质混合物的分析技术。
An analytical technique for separating mixtures of volatile substances.
用SFC可以分离多数不能用GC分离的低挥发性物质。
SFC can separate many analytes that are not able to be separated by GC.
本发明是关于减缓挥发性物质(液态)释放速度的新方法。
The present invention relates to a new method which can make release speed of volatile matter (liquid) slow down.
挥发性物质的林间喷洒试验结果与嗅觉反应试验结果一致。
Field spraying Dahurian larch cones with some of its volatile components had mixed results but support the olfactory testing results.
另外，所述的挥发性物质由至少两种不同沸点的催化剂组成。
In addition, the volatile substance comprises at least two catalysts with different boiling points.
十三香中由于富含有多种挥发性物质，测定水分国标方法为蒸馏法。
Because thirteen-spices contains a lot kinds of volatile matter, it is determined its water with national standard-distilling method.
本发明涉及一种发热体，尤其是一种用于加热挥发性物质的发热体。
The invention relates to a heating body, in particular to a heating body used for heating volatile substance.
看起来它们在温暖的区域和时节更为明显，这表明其可能是挥发性物质。
They therefore seem to favour warm areas and times, suggesting that they consist of volatile material.
无烟煤一种很亮的高密度煤，含炭量高，挥发性物质少，燃料时火焰纯净。
A dense, shiny coal that has a high carbon content and little volatile matter and burns with a clean flame.
介绍了用充气膜吸收技术分离水溶液中挥发性物质过程中膜污染的基本原理。
The basic principle of membrane fouling in separation of volatile substances in water solution by gas filled membrane absorption process is presented.
煤经干馏，产生的挥发性物质称煤气，煤气中还带有焦炭汽蒸产生的水煤气。
Coal gas is made by the distillation of the volatile matter from coal with some steaming of the coke to produce water gas.
采用玻璃微球吸附工艺，与挥发性物质及非水溶性高分子物质一起混合并干燥。
It USES the glass microballoons adsorption technology to mix them with the volatile matter and non-aqueous macromolecular material together and drying it.
虫害诱导的挥发性物质在调节植物-害虫-天敌三营养关系中具有重要的作用。
Herbivore-induced plant volatiles play a vital role in mediating tri-trophic interactions among host plants, herbivores and herbivore natural enemies.
植物挥发性物质释放动态特性是植物自身因子和各种环境因子综合作用的结果。
The dynamic releasing characteristics of plant volatiles are affected by plant self and environmental factors.
这种整合在化工厂等地是至关重要的，因为挥发性物质会对工作环境产生危害。
This integration is crucial in a facility such as a chemical plant, where volatile products make for dangerous working environments.
在不同保留时间段，挥发性物质在萃取纤维上的吸附情况受到操作因素的影响不同。
The results appeared that in the different Remain Times (RT), the impactions of each operate-factor on the absorption of volatile substance in the SPME fiber varied.
为活体植物挥发性物质的收集和分析提供了一个简便、快速、高灵敏、高效率的方法。
It provides a convenient, quick, high sensitivity and efficiency method for the collecting and analysis of the volatile from living plants.
汽车内饰材料中所含挥发性物质的释放是造成车内环境污染最直接的也是最主要的原因。
The discharge of volatile matter from the interior automotive materials is the the most direct and the most important reason for environmental pollution of the vehicles interior.
报道了用水蒸汽蒸馏萃取法提取卷柏中挥发性物质，测得卷柏挥发油的含量为2.85%。
Distillation extraction method is used for extracting the volatile constituents of the Herba Selaginellae. The average oil yield obtained is 2.85%.
发酵后苹果渣中挥发性物质中50%以上为酯类物质，醛、酮、酸类相对含量不到15%。
For the fermented apple pomace, ester took up more than 50% in the total volatile products, with less than 15% of alkyl -, aldehyde and ketone.
天牛幼虫排出的虫粪所释放的挥发性物质成为天敌搜寻天牛所在微栖境的重要化学信息物质。
Frass of longhorned beetle larvae plays an important role in natural enemies searching for their cerambycid hosts.
控制实验与植物化学分析结果表明水稻挥发性物质和其它一些次生代谢物影响稻飞虱的寄主选择。
The results of control tests and phytochemistry analysis show that volatiles and allelochemicals affect host selection behavior of Nilaparvata lugens.
利用半定量方法对组分进行定量，该方法可较好地对起泡葡萄酒中挥发性物质进行提取与定量分析。
The above methods could be applied for the extraction and the quantitative analysis of volatile substances in sparkling grape wine.
在一定负载量范围内，挥发性物质含量随负载量增加而提高，游离氨基酸总含量随负载量增加而下降。
The volatile constituents contents increased and the dissociation amino acids content declined with the adding of the yield.
综述了脂质自动氧化、热降解产生的挥发性物质及含有不饱和脂肪酸的脂质氧化在肉风味中的重要作用。
The effects of autoxidation and thermal degradation of lipids leading to the volatile components and the oxidation of lipid with unsaturated fatty acids on the formation of meat flavour were reviewed.
结果显示，复叶槭的挥发性物质由31种化合物组成，分属于醇类、醛类、酸类、酯类、酮类及萜类等。
The experiment results showed that the volatile of ash-leaf maple consists of 31 compounds, which are classified into alcohols, aldehydes, acids, esters, ketones, terpenes and others.
短时的一闪，当明焰在表面的上方经过，使得从某挥发性物质(如原油)的表面上升的蒸气着火的最低温度。
The lowest temperature at which vapors rising off the surface of a particular volatile such a crude oil will ignite with a short flash as an open flame is passed over the surface.
如果给两种挥发性物质的混合物加热，在分离的物质中，低沸点的物质的浓度比溶解的高沸点物质的浓度要高的多。
If a liquid mixture of two volatile materials is heated, generally the vapor that comes off will have a higher concentration of the lower boiling materials than the liquid from which it was evolved.
如果给两种挥发性物质的混合物加热，在分离的物质中，低沸点的物质的浓度比溶解的高沸点物质的浓度要高的多。
If a liquid mixture of two volatile materials is heated, generally the vapor that comes off will have a higher concentration of the lower boiling materials than the liquid from which it was evolved.
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