通常用来表示某种纯净物质(液体或固体)在一定温度下蒸气压的大小。具有较高蒸气压的物质称做易挥发物(volatile matter);较低的称做难挥发物(involatile matter)。对于组分互溶的混合液,两组分的挥发度之比称做相对挥发度(relative volatility)。
n. volatility
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.
选择溶剂要注意溶解力、蒸汽压与挥发度,使用中要注意安全。
When selecting solvent attention should be paid to its solubility, steam pressure and volatility in addition to safety.
一缩二乙二醇对邻氯甲苯和对氯甲苯相对挥发度影响的机理还需进一步探讨。
The mechanism of the effect of diethylene glycol on o -, p-benzol chloride system needs further investigating.
应用推荐