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Expectorate
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Ecology
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Epicondyle
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Retrotransposon
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Position isomerism
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Coccyx
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Smoke detector
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Second of arc
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H.323
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Concomitant
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Domestication
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UV water steriliser
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Hot-plug
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Strip
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Non-woven
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Somatic
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Basiphilous
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Appulse
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Mauritian flying fox
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Fingerprint
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Albinism
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Third law of thermodynamics
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Non-essential amino acids
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Wader
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Catabolism
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Teleoperation
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Psychosomatic
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Storage memory
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Optical disk
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Endoderm
Hydrogen engine
A hydrogen engine is a device that transforms the chemical energy contained in dihydrogen (H2) into mechanical energy.
There are three types of hydrogen engines:
- A reaction engine;
- An internal combustion engine;
- An electric engine powered by a fuel cell.
Hydrogen engines are used in astronautics, aeronautics and the car industry.
Engine of a hybrid hydrogen/petrol vehicle. © Claus Ableiter, Wikimedia CC by-sa 3.0
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