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| Subject | English | Maltese |
| energ.ind. | Baku-Tbilisi-Ceyhan pipeline | pipeline Baku-Tbilisi-Ceyhan |
| fin., energ.ind., industr. | Caspian Pipeline Consortium | Konsorzju għall-pipeline tal-Baħar Kaspju |
| environ. | gas pipeline A long pipe, especially underground, used to transport gas over long distances | pajp tal-gass |
| environ. | oil pipeline A line of pipe connected to valves and other control devices, for conducting oil | konnessjoni ta' pajpijiet għat-trasport taż-żejt |
| environ. | transportation by pipeline Transportation of gases, liquids or slurries by a system of tubes, of steel or plastics. Petroleum, natural gas and products derived from them are the main substances transported by pipelines | trasport permezz ta' sensiela ta' pajpijiet |