Unclassified
Action (firearms)
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Unclassified
Action (firearms)
Functional mechanism of breech-loading
rare · Q5451695
Related cards · engineered physical system
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Unclassified
Jet engine
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Ion thruster
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Artifacts
Altair 8800
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Iconic places
Cloaca Maxima
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Unclassified
Flywheel energy storage
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Breathalyzer
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