demonstration , raisonnement et validation dans l'enseignement ...
JURY. Mme Marie-Jeanne PERRIN. Professeur des Universités. Présidente. IUFM Nord-Pas-de-Calais. M. Yves CHEVALLARD.
NA-K B/VA Stationary Dust Extractors - McCarthy Environmental LtdThe design of the NA-K enables to extract humid kinds of dust or flying sparks that are being produced by processing machines. The devices of the NA-K series ... WOB-L® Piston Air Compressors and Vacuum PumpsService free and oil-less. > Compact design. > Balanced for smooth, low vibration operation. > Suitable for continuous running. > Wetted parts. On-load tap-changer VACUTAP® VT - ReinhausenThe contact life of the vacuum interrupters amounts to 200.000 switching operations, regardless of step voltage and through-current. After 200.000 switching ...
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