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1 实验方法实验电路图所示,图中(?)_r、r_x为待测电池的电动势和内电阻,R为电阻箱.1.1 测量电池的电动势(?)_x
1 Experimental method The experimental circuit diagram shows that (?)_r, r_x are the electromotive force and internal resistance of the battery under test, and R is the resistance box. 1.1 Measuring the electromotive force of the battery (?)_x