Truck and turbojet engine: what they have in common

  1. Step 1. Truck — has part — Air brake. Air brakes, as on trains.
  2. Step 2. Air brake — has part — Compressor. A compressor pumps the air.
  3. Step 3. Compressor — is part of — Turbojet engine. The compressor compresses the air.

Open Evothings