Engineer Stuff

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Across
  1. 2. and space crafts
  2. 6. for health
  3. 9. lock brakes
  4. 10. houses and buildings
Down
  1. 1. and flow of traffic
  2. 3. wires and electrical poles
  3. 4. and study of DNA
  4. 5. processing machines
  5. 7. engines
  6. 8. and bridges