Diy Creativity Vacuum Cleaner Science Experiment Toy Children's Handmade Self-made Materials Technology Small Inventions
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Description
Product material: wooden
Product style: children's toys
Product color: as shown
Product size: 25*6cm
Product weight: about 100g
Product packaging: 1pc
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Experimental principle: This is a typical switch circuit. The battery provides power. The switch controls the on/off of the current. When the switch is turned on, the switch current flows...