初三物理“液化”一节是通过做水蒸气温度降低、凝结成水的演示实验来进行教学的。如果用教材中介绍的装置进行实验,则因完成实验所需的时间较长,会影响教学任务的完 The physical liquefaction section of the third grade is taught through demonstration experiments in which the temperature of the water vapor is reduced and condensed into water. If the experiment is performed using the device described in the textbook, the time required to complete the experiment will be longer and will affect the completion of the teaching task.