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tornillo de Arquimedes
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la catapulta -
Maquina de hilar -
desmontadora de algodon -
pila electrica -
tela metalica -
locomotora de vapor -
telegrafo sin alambre -
papel parafinado maquina de escribir -
control remoto rayos x -
transistor
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.