It is found that the floor surface temperature variety exponentially with time after the change of water condition, and the heat lag in the heating period is about half of that in cooling period.
发现供水状态变化后，地板表面温度随时间呈指数变化，升温期的稳定时间约为降温期的一半。
The reaction can be carried out under the water bath condition for about 4 to 5 minutes or be carried out during the natural cooling process after the heating by the water bath for 3 to 5 minutes.
所述反应可在上述水浴条件下进行，持续约4 - 5分钟；也可在水浴加热后的自然降温过程中进行，持续约3 - 5分钟。
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