scientific experiment invention hand power generation wind vane diy handmade material package technology small production science and education frontier

2 piece

Specifications

portable power generator advanced	CN¥ 4.96
portable power generator upgrade	CN¥ 4.75
portable power generator luxury	CN¥ 5.08
oscillating fan advanced	CN¥ 4.88
jeep	CN¥ 3.65
electric glider	CN¥ 3.24
paddle steamer	CN¥ 4.19
oscillating fan	CN¥ 4.96
fan	CN¥ 5.21
artificial satellite	CN¥ 7.73
portable power generator	CN¥ 5.05
taxiplane	CN¥ 3.07
bear	CN¥ 3.07
series and parallel circuits	CN¥ 3.97
beili bridge	CN¥ 2.86
gear round trip	CN¥ 7.65
tidal power generation	CN¥ 6.35
solar energy driven car	CN¥ 5.32
siege crossbow	CN¥ 4.49
power bank	CN¥ 5.96
dolphin humidifier	CN¥ 11.83
oil-pumping machine	CN¥ 10.43
crossing fire line	CN¥ 5.38
lift elevator	CN¥ 5.69
cross fire line s	CN¥ 5.69
conveyor belt	CN¥ 10.37
mars rover	CN¥ 8.63
mars rover new	CN¥ 6.9
mars cleaning trolley	CN¥ 8.69
mars transporter	CN¥ 7.8
mars energy base	CN¥ 7.2
zhu rong	CN¥ 11.75
remote control paddle steamer	CN¥ 10.79
forklift	CN¥ 14.27
bluetooth audio	CN¥ 29.55
new recorder	CN¥ 11.98
radio	CN¥ 16.37
artificial rocket	CN¥ 10.5
conveyor belt s	CN¥ 12.71
geosynchronous satellite	CN¥ 16.37
solar cabin	CN¥ 8.23
lunar rover	CN¥ 7.43
solar helicopter	CN¥ 5.03
three-ball running instrument	CN¥ 5.87
series and parallel circuits s	CN¥ 9.24
light tunnel	CN¥ 5.55
a ball that cannot be blown off	CN¥ 3.75
magnetic seesaw	CN¥ 2.69
magnetic frog	CN¥ 3.03
magnetic car	CN¥ 3.44