Activity & Learning Toys

Regun Low Temperature Stirling Engine Model, Steam Heat Electricity Generator Machine Education Model Toy, for Kids Craft Ornament, Birthday, New Year Gift, Education Model DIY Kit 【Stirling engine】A Stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas, the working fluid, at different temperature levels such that there is a net conversion of heat energy to mechanical work.The... Regun Low Temperature Stirling Engine Model, Steam Heat Electricity Generator Machine Education Model Toy, for Kids Craft Ornament, Birthday, New Year Gift, Education Model DIY Kit