SIMPLE MACHINE
2019-03-31 本文已影响0人
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The tap is a simple machine.
It’s name is a wheel and axle.
It makes it easier to turn on the tap.
SIMPLE MACHINE
SIMPLE MACHINE
SIMPLE MACHINE
The tap is a simple machine.
It’s name is a wheel and axle.
It makes it easier to turn on the tap.
SIMPLE MACHINE
