demonstration , raisonnement et validation dans l'enseignement ...
JURY. Mme Marie-Jeanne PERRIN. Professeur des Universités. Présidente. IUFM Nord-Pas-de-Calais. M. Yves CHEVALLARD.
05 2021???1027??????????????????TD?TR?????????????????. ???????????????????????? ?????????????????? ... ?????2??????????. ?655???????149???????????. ???????????????????????. ???????????????????????. ?? ... ??6?? ????????????? ?????????? ?? ...????? 28-22?. ?????? 0 2?. ????????. ?????? ... ???????????????. ?????????????????????? ... ??????????????????????? ?????? ...????????????. ? ? ?? ? ????. ? ? ?? ? ?????. ??. ??. ??. ??. ??. ? ? ?????. ??. ????. ? ??? ??? ?? ... ????????????????13????????????????????. ????????????????????????. ????? ???????????????? ... ???? - ?????????????????????. ????????????????????????????????????????. ???????????????????????? ... 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 ... AS 660 - Aebi Schmidt GroupThe high suction power and flow-optimised suction shaft ensure outs- tanding collection of debris ? even persistent dirt and liquids. The ... PRODUCT OVERVIEW FILTER DRYERS & DRYERS - heinkel.deDust filter with automatic back cleaning, sampling valve, CIP system, sight glass with vessel light, vacuum system with condenser, heating and cooling unit etc. Bearings for Special EnvironmentsBearing. ?Deep groove ball bearings, ?8×?22×7 (Open type). Axial load. ?10N?30N?50N. Speed. ?2 500min-1. Degree of vacuum ?Around 10-5 Pa. Temperature ?Room ...
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