Science technology hydraulic excavator excavator primary secondary school experiment material science education small invention
(No reviews yet)
Write a Review
Related Products
Science technology invention material pneumatic hydraulic piston excavator scientific experimental model primary school manual
$1,935.99
Small production kit: simulation excavator
Baby material: Wood + nail + screw + PC hose + needle barrel + wood glue
Simulation excavator pressure science experiment technology small diy children's creative educational toys school textbooks
$1,814.99
Course courseware of piston excavator The power unit, main parts of transmission system, slewing mechanism, auxiliary equipment and cab of the commonly used full rotary hydraulic excavator are...
Creative DIY small lamp technology small production small invention primary school children's manual material science experiment
$1,935.99
Experimental principle: This is a typical switch circuit. The battery provides power. The switch controls the on/off of the current. When the switch is turned on, the switch current flows...
Transmitter Science Experiment Toy primary school student science popularization device science and technology invention factory
$1,814.99
Transmitter course courseware The principle of radio receiving and transmitting is that the transmitter sends out current of different frequency and wavelength according to the requirements of...
