STEM Channel Hydraulic Excavator
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DIY Channel Hydraulic Excavator
Material: wood Suitable age: over 8 years old
hydraulic arm x1 hydraulic excavator x1
Hydraulic transmission is a transmission mode which uses pressurized liquid in closed system to transfer motion and power. It converts the mechanical energy into the pressure energy of the liquid, and then the pressure energy of the liquid into the mechanical energy.
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