puzzle

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Across
  1. 2. leading edge
  2. 6. mach number
  3. 7. coefficient of performance
  4. 8. energy transfer
  5. 10. use in air craft
  6. 11. use in steam turbine
  7. 13. to produce refrigerating effect
  8. 15. Seperate between system surrounding
Down
  1. 1. Both mass and energy transfer
  2. 3. compress the air
  3. 4. constant channel area
  4. 5. to produce power
  5. 9. use in open system
  6. 12. distance between two blades
  7. 14. to develop power