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不锈钢杆250 mm
不锈钢杆 00 mm
不锈钢杆 470mm
不锈钢杆 1500 mm
不锈钢杆 1000mm
不锈钢杆 750mm
钻孔杆
Experiment: Harmonic Oscillation of a String Pendulum (230 V, 50/60 Hz)
Experiment: Harmonic Oscillation of a String Pendulum (115, 50/60 Hz)
Experiment: Moment of Inertia (115 V, 50/60 Hz)
Experiment: Moment of Inertia (230 V, 50/60 Hz)