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the zeroth law of thermodynamics enables us

to measure temperature. in order to measure temperature of body a, we compare body c ¡ª a thermometer ¡ª with body a and temperature scales (ζȵıê³ß£¬¼ò³ÆÎ±ê) separately. when they are in thermal equilibrium, they have the same

temperature. then we can know the temperature of body a with temperature scale marked on thermometer. 6£®¾­ÑéαêµÄȱµãÊÇʲô£¿ÎªÊ²Ã´£¿

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