A顾客到一家小商店去买糕点,店里惟一的一台天平的两臂不一样长,但一时又找不出可以替代的称量器具.店主想出了下面的一种称量方法.他在天平的右盘中放上糕点,天平平衡时读出左盘中砝码重量为m1;然后再将糕点放在左盘上,同样读出右盘中的砝码重量m2.店主就按这两次重量的平均数 A customer went to a small shop to buy cakes. The only scales in the shop were not the same length of arms, but they could not find any alternative weighing apparatus. The shopkeeper came up with the following weighing method. Put the cake on the right side of the scale. When the balance is balanced, read out the weight of the left plate and weight it to m1; then place the pastry on the left plate and read out the weight of the right plate. m2. The owner clicks this. Average of two weights