测量圆线圈轴线上的磁场分布曲线

$ x\ /\ mm$	$+I_S\ ,\ +I_M$	$+I_S\ ,\ -I_M$	$+I_S\ ,\ -I_M$	$+I_S\ ,\ -I_M$	$U_H = \frac{\mid\ U_1\ -\ U_2\ +\ U_3\ -\ U_4\ \mid}{4}/mV$	$B = \frac{U_H}{K\ I_S}/(\times 10^{-3}\ T)$
	$\ \ \ U_1\ /\ mV$	$\ \ \ U_2\ /\ mV$	$\ \ \ U_3\ /\ mV$	$\ \ \ U_4\ /\ mV$
0.0
5.0
10.0
…
65.0
70.0