Asked | Open questions | Answered Points Date Pair Term / Answer given Level Status Gloss 4 Apr 28 '05 eng>esl probe of the pH meter Electrodo o sonda pro closed ok 4 Jul 23 '04 esl>eng condensador en vacio vacuum condenser pro closed ok - Jul 23 '04 esl>eng sistema de aire comprimido compressed air system easy closed no Asked | Open questions | Answered