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17:15 Sep 25, 2000
Spanish to English translations [PRO] Tech/Engineering
Explanation: In all turbine or compressors there are valves used to release the excess pressure when the pressure reaches a certain level. The act of letting excess air ( or any other gas or fluid )out of a system is known in English as "bleeding". That seemes to be the item described in your piece.
Good luck and I hope this helps you.