英语语法分析

Thermometers are filled with pentane or alcohol.

温度计盛有戊烷或酒精。

The reliability of the apparatus had been checked by measuring the critical constants of n-pentane.

测定了正戊烷的临界参数以证实该装置的可靠性。

Also, the vapor pressures of n-pentane and 1-hexene at high temperatures were determined simultaneously.

同时，也测定了正戊烷、1 -己烯在高温下的饱和蒸汽压。