they solidified
-se sont solidifiés
Past they conjugation of solidify.
In 1834, inventor Joseph Morgan helped to further the modern-day candle industry by developing a machine that allowed for the continuous production of molded candles by using a cylinder with a movable piston to eject candles as they solidified.
En 1834, l'inventeur Joseph Morgan contribua à faire avancer l'industrie des bougies modernes en mettant au point une machine qui permettait la production continue de bougies moulées en utilisant un cylindre muni d'un piston mobile pour éjecter les bougies lors de leur solidification.
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