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Due to we don't have enough room to display all the speed options of AC 110V, please contact us if y..
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By assembling the steam engine model, exercise your hands-on ability, observe the steam engine opera..
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It can inspire your curiosity and creativity. It is also a wonderful gift for your friends! To be ..
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Product description: *L293D is a monolithic integrated, high voltage, high current, 4-channel driver..
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The Archi-TECH Electronic Smart House contains 20 Kinetic, Energetic Circuitry Projects to let kids ..
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The stepping motor is a kind of mechanical and electrical device that converts electrical pulses int..
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This model can clearly show the trajectory of valve and piston, and help students understand the int..
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Bundle includes Diy kit with 50+ real parts: build Robots with 10 challenge cards, Wood, Electric mo..
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Features: 1.The vacuum engine uses the inertia of the flywheel to drive the piston, thereby reducing..
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