因为水的挥发性不高。
只有在发生大爆炸的情况下，不易挥发元素才会散落到周边地区以外更远的地方。
It would take a major explosion to scatter nonvolatile elements beyond the immediate area.
所以如果A的挥发性更高，它的沸点更低。
So if a is the more volatile component, it has the lower boiling point.
任何其他的挥发性元素也在该步中除去。
极低的挥发性提供良好的油气分离性。
The extremely low volatility provides the good oil gas separation property.
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 change of the volatile oil component was found before and after inclusion.
仓库里有很多挥发性的化合物。
研究了厚膜电阻浆料用有机载体的挥发特性。
The volatility of the organic carrier in thick film resistance paste was studied.
合成发动机油有良好的高低温性能、抗氧化性能和挥发性能。
Synthetic engine oil has excellent high and low temperature property, antioxidation property and volatility property.
挥发性低，耐寒性和耐热性好，赋予制品优良的低温柔软性。
Low volatile, cold resistance and good heat resistance, excellent low-temperature products to give softness.
原料组成对相对挥发度的影响较弱。
The effect of raw material composition on relative volatility is weak.
结果水蒸气蒸馏法更有利于白术挥发油的提取；
Results Water distillation method was good for the extraction of essential oil.
渗透蒸发用于水中挥发性有机物的脱除，近年来受到高度的关注。
Pervaporation used in removal of VOCs from water is paid seriously attention recently.
前言： 目的：设计一种中药材挥发油提取过程中动力学模型的测定装置。
Objective: To design a device to assay the dynamics model of volatile oil.
可以把纯酒精和挥发油以三比七的比例混合。
无火香薰挥发精油的使用环境怎样最佳？
但挥发油抗过敏作用的药理研究报道较少，其抗过敏机理更未涉及。
But there are few pharmacological researches about its anti-hypersensitive function, let alone its mechanism.
但挥发油抗过敏作用的药理研究报道较少，其抗过敏机理更未涉及。
But there are few pharmacological researches about its anti-hypersensitive function, let alone its mechanism.
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