This video demonstrates how to construct a small-scale rocks crushing machine using a tractor, showing the basic principles of mechanical crushing through a hands-on science project.
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DIY tractor mini rocks crushing machine | diy tractor science project本站添加:
[music] [music] [music] [music] [music] [music] >> Okay. Okay.
Okay. Okay.
>> [clears throat] [music] [music] [music] [music] >> OH, NO.
HELP ME. HELP ME.
OKAY. OKAY.
HEY, WHAT [screaming] HAPPENED?
HELP ME.
HELP ME.
>> [music] [music] [music] >> OKAY, LET'S GO.
THANK YOU. OKAY. OKAY.
>> [music] [laughter] >> WOOHOO!
>> STOP. STOP.
>> [music] [music] >> THANK YOU.
THANK YOU.
OKAY. OKAY.
>> [music] [music] [music]
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