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例1两个质量相等,温度均为10℃的铁块,分别放入质量相等、温度均为50℃的水和煤油中,当各自达到热平衡时(不计热损失),
Example 1 Two iron blocks of equal mass and temperature of 10 ° C were placed in water and kerosene of equal mass at 50 ° C, respectively, when they each reached thermal equilibrium (without regard to heat loss)