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| re·cu·per·a·tor [ ri kpə ràytər ] (plural re·cu·per·a·tors) |
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1. heat exchanger: a device used to recover energy that would otherwise be lost, especially one that takes heat from exhaust gases and uses it to preheat incoming combustion air
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2. resetting device in gun: a device in a gun that returns it to its firing position following recoil
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