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实验: 电流天平
实验: 电流天平 (115 V, 50/60 Hz)
Experiment: Amontons’ Law (115 V, 50/60 Hz)
Experiment: Amontons’ Law (230 V, 50/60 Hz)
Experiment: Magnetic field of a cylindrical coil (230 V, 50/60 Hz)