Ethanol is the more volatile component.

乙醇是更容易挥发的组分。

Because a is the more volatile component.

因为A的挥发性更好。

Because water's the less volatile component.

因为水的挥发性不高。

So I'm going to make B the more volatile component.

那么我让B是较易挥发的成分。

So now I want to stick with a as the more volatile component.

假设A是，挥发性更强的组分。

So if a is the more volatile component, it has the lower boiling point.

所以如果A的挥发性更高，它的沸点更低。

But all I want to really illustrate is, this is a strategy for purification of the less volatile component.

但是我想阐述的是，这是一种,提纯挥发性弱的物质的方法。

The results indicated that olfactory responses of T. bactrae were influenced not only by volatile components but also by concentrations of each component.

结果表明：卷蛾分索赤眼蜂的嗅觉反应不仅与挥发物组分的种类有关，而且与每一种物质的浓度也有一定的关系。

Various technique used to analyze the volatile component of fragrant stationery were introduced, including the technique of specimen pre-treatment, separation and detection.

介绍适用于香味文具的挥发性成分分析的各种技术，包括样品的前处理以及分离和检测的方法。

There were many systematic and in-depth study abroad on volatile components in mushroom. But a volatile component in mushroom of our research was still in its initial stage.

蕈菌中挥发性风味物质的研究在国外已有许多系统和深入的研究，而我国对蕈菌中挥发性风味物质的研究还处在起步阶段。

Volatile components in oak chips were determined by GC-MS and 38 compounds were identified, including 13 ketones, 8 phenolic compounds, 6 esters, 5 aldehydes, 5 alcohols, 1 acid and 1 other component.

本文采用GC-MS测定了橡木中的挥发性香气成分，共鉴定出38种化合物，其中种类最多的是酮类化合物，有13种，其次是酚类8种，酯类6种，醛类和醇类各5种，酸类1种，其他组分1种。

A second component, for the medium-term, would scale up financing of energy projects to reduce a country's longer-term vulnerability to high and volatile fuel prices.

第二个中期组成部分将扩大对能源项目的资助，以提高国家承受高涨的和动荡的燃料价格的长期能力。

That could be because the collision that made the moon in the first place was so hot that volatile elements like hydrogen, a key component of H2O, largely burned away.

这可能是因为月球形成过程中，撞击产生的热能使挥发性氢元素——水的重要组成成分——大量流失。

You can continue to walk your way down through these coexistence curves and purify repeatedly the component B, the less volatile of them, and end up with some amount of it.

仍然可以继续通过，共存曲线来，反复提纯B物质，挥发性低的物质，最后可以得到一点量。

To analyse the volatile chemical component of cinnamon leaf.

分析肉桂叶的挥发性化学成分。

The stone calamus pharmacological action's research existence deviation clinical actual tendency, its effective component research also much concentrates in the volatile oil part.

石菖蒲药理作用的研究存在偏离临床实际的倾向，其有效成分研究也多集中在挥发油部分。

The author summarizes the study on the chemical activation component of and volatile compound etc. of Toona sinensis, which has a certain reference role for its exploitation and utilization.

笔者对香椿的化学活性成分、挥发性物质、药理研究等进行综述，对香椿的进一步开发与利用具有一定的借鉴作用。

Method: the host molecule was selected and a single chemical component isolated from volatile oil by the host guest recognition.

方法：应用主客体识别原理，选择主体分子，经重结晶从挥发油中选择分离单一化学成分。

The change of the volatile oil component was found before and after inclusion.

包合物形成一种新的物相，且包合前后挥发油组成有一定的变化。

The components of the volatile oil were separated and identified by GCMS. The relative content of each component was determined by area normalization.

用气相色谱质谱联用法对其化学成分进行鉴定，用归一化法计算各组分的相对百分含量。

Charcoal of ginger component of the volatile oil has been destroyed, Gingerol compound reduced to trace.

干姜制备为姜炭后，挥发油成分已被破坏，姜酚类成分降低至微量。