时间(min)

0

10

20

30

电压(V)

75.750

75.752

75.742

75.730

时间(min)

40

50

60

70

电压(V)

75.756

75.767

75.749

75.750

时间(min)

80

90

100

110

电压(V)

75.731

75.728

75.749

75.730