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Stem Model enginediy | 12V Semiconductor Intelligent Cooling & Heating Device Dual-Mode Temperature Control With Digital Display Mini Air ConditionerStem Model enginediy | 12V Semiconductor Intelligent Cooling & Heating Device Dual-Mode Temperature Control With Digital Display Mini Air Conditioner
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Experiment Model

Stem Model enginediy | 12V Semiconductor Intelligent Cooling & Heating Device Dual-Mode Temperature Control With Digital Display Mini Air Conditioner

$45.49
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Stem Model enginediy | 2 Cylinder Stirling Engine Electricity Generator With Bulb Stirling Engine Motor Model - EnginediyStem Model enginediy | 2 Cylinder Stirling Engine Electricity Generator With Bulb Stirling Engine Motor Model - Enginediy
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Experiment Model

Stem Model enginediy | 2 Cylinder Stirling Engine Electricity Generator With Bulb Stirling Engine Motor Model – Enginediy

$29.99
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Stem Model enginediy | 2 Cylinder Stirling Engine Model Physics Experiment Generator With BulbStem Model enginediy | 2 Cylinder Stirling Engine Model Physics Experiment Generator With Bulb
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Experiment Model

Stem Model enginediy | 2 Cylinder Stirling Engine Model Physics Experiment Generator With Bulb

$44.09
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Stem Model enginediy | 2 In 1 Multifunction Bluetooth Square Wave Music Tesla Coil Scientific Experiment Toy With 25Cm Artificial LightningStem Model enginediy | 2 In 1 Multifunction Bluetooth Square Wave Music Tesla Coil Scientific Experiment Toy With 25Cm Artificial Lightning
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Experiment Model

Stem Model enginediy | 2 In 1 Multifunction Bluetooth Square Wave Music Tesla Coil Scientific Experiment Toy With 25Cm Artificial Lightning

$59.99
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Stem Model enginediy | 3-Cylinder Electromagnetic Engine Brushless Motor Metal Miniature Star Model With 6-12VStem Model enginediy | 3-Cylinder Electromagnetic Engine Brushless Motor Metal Miniature Star Model With 6-12V
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Experiment Model

Stem Model enginediy | 3-Cylinder Electromagnetic Engine Brushless Motor Metal Miniature Star Model With 6-12V

$97.58
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Stem Model enginediy | 3D Printed Electric Transmission Model Physics Experiment Teaching Model Educational ToyStem Model enginediy | 3D Printed Electric Transmission Model Physics Experiment Teaching Model Educational Toy
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Experiment Model

Stem Model enginediy | 3D Printed Electric Transmission Model Physics Experiment Teaching Model Educational Toy

$18.39
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Stem Model enginediy | 3D Printed Large Pendulum Ship Anchor Assembly Model Physics Experiment Teaching Model Educational Toy (19Pcs)Stem Model enginediy | 3D Printed Large Pendulum Ship Anchor Assembly Model Physics Experiment Teaching Model Educational Toy (19Pcs)
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Experiment Model

Stem Model enginediy | 3D Printed Large Pendulum Ship Anchor Assembly Model Physics Experiment Teaching Model Educational Toy (19Pcs)

$22.39
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Stem Model enginediy | 3D Printed Manual Transmission Model Physics Experiment Teaching Model Educational ToyStem Model enginediy | 3D Printed Manual Transmission Model Physics Experiment Teaching Model Educational Toy
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Experiment Model

Stem Model enginediy | 3D Printed Manual Transmission Model Physics Experiment Teaching Model Educational Toy

$21.74
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Stem Model enginediy | 3D Printed Tilt-Angle Tourbillon Assembly Model Physics Experiment Teaching Model Educational ToyStem Model enginediy | 3D Printed Tilt-Angle Tourbillon Assembly Model Physics Experiment Teaching Model Educational Toy
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Experiment Model

Stem Model enginediy | 3D Printed Tilt-Angle Tourbillon Assembly Model Physics Experiment Teaching Model Educational Toy

$24.91
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Stem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational ToyStem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational Toy
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Experiment Model

Stem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational Toy

$37.79
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Stem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational ToyStem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational Toy
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Experiment Model

Stem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational Toy

$22.39
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Stem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational Toy (21Pcs)Stem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational Toy (21Pcs)
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Experiment Model

Stem Model enginediy | 3D Printed Tourbillon Clock Assembly Model Physics Experiment Teaching Model Educational Toy (21Pcs)

$23.79