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Track gauge
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Track gauge
Spacing of the rails on a railway track
epic · Q214519
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Foldable smartphone
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Laptop
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Intermodal container
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ISO metric screw thread
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19-inch rack
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Book size
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Related cards · scalar quantity
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Concepts
Atmospheric pressure
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Boltzmann constant
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Absolute zero
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Azimuth
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Capacitance
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35 mm movie film
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Concepts
Age of consent
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Age of consent in the United States
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Adolescence
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Age of majority
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Absolute zero
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Acceleration
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