• bharathsg (25)in #cars • 6 years ago

  Ferrari collection Italy

  Collection preview Ferrari 70th Anniversary celebration ▶️ DTube ▶️ IPFS

  $0.00

   2 1
• bharathsg (25)in #pump • 7 years ago

  Vaccum pumping system and its types

  Pumping systems A system, initially at atmospheric pressure, is first evacuated by a medium-vacuum pump (forepump) until a pressure is reached where a high-vacuum pump becomes…

  $0.00

   0 1