| 摘要 |
A stirring determining device that determines whether stirring by a stirrer, which stirs liquid contained in a vessel using sound wave generated by a sound-wave generating unit that is attached to the vessel, is successful or unsuccessful. The stirring determining device includes a temperature sensor that measures a temperature of the liquid; and a determining unit that determines whether stirring of the liquid contained in the vessel is successful or unsuccessful depending on the temperature of the liquid measured at least before and after the stirring by the temperature sensor.
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