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Dual Cylinder Stirling Engine Model Generator with Voltage Meter and LED Light - DIY STEM Educational Kit
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7.83Hz Schumann Wave Pulse Generator with Acoustic Feature for Enhanced Sleep and Relaxation
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Four-Stroke Single Cylinder Gasoline Engine Model for Educational Experiments - DIYEngMod
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Stirling Engine with Musical Mechanical Box: Unique Science Experiment Toy
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Stirling Engine Car Model Kit | Fun Science Experiment Toy for Learning
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Retro Y-Shape Stirling Engine Generator with LED Lights - Educational Science Model Toy
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Miniature Metal Steam Engine Kit - Fully Functional Model with Alcohol Lamp and Heating Boiler
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Educational Metal Four-Stroke Engine Model for Physics Experiments
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Metal Six-Cylinder Brushless Electromagnetic Engine Model - Educational DIY Science Toy
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Single-Cylinder Four-Stroke Diesel Engine Educational Model - STEM Experimental Instrument
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Bluetooth-Enabled Tesla Coil with 10CM Arc Length and Music Sync Feature
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Two-Cylinder Stirling Engine Physics Experiment Kit with Generator and Bulb - DIY Model
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External Combustion Metal Stirling Engine Model for Physics Experiments - DIY Educational Kit
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Steam Engine Automatic Pressure Regulator - Durable Metal Design for DIY Projects
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ENJOMOR γ-Type Stirling Engine Educational Model Kit - DIY Mechanical Science Generator
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Bluetooth Plasma Speaker Tesla Coil - Mini DIY Musical Art
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