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| Spanish | English |
| barco de doble casco | twin-hull craft |
| barco de doble casco | twin-hull craft Oil tank vessels provided with a double-hull to meet the regulatory safety requirements in oil transportation. Requirements include minimum values for depths and breadth of double bottoms. Also called double-hull tank vessel |
| copla hembra doble | double female coupling |
| doble filtración alternada | alternating double filtration |
| filtración doble | double filtration |
| manguera de doble capa | double jacket hose |
| racor doble hembra | double female coupling |
| rascador doble | twin-scraper |