vapour pressure index

例句：

1. 1. The temperature has a significant impact on the vapour pressure of the substance.
   温度对物质的蒸汽压有显著影响。
2. 2. The vapour pressure index is used to predict how much water will condense in a sealed container.
   蒸汽压指数用于预测密封容器中将有多少水凝结。
3. 3. The vapour pressure index can be influenced by factors such as humidity and air pressure.
   蒸汽压指数可能受到湿度和气压等因素的影响。