How does a portable ultrasound machine work?

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Tags

1. #transducer
2. #receives
3. #pressure
4. #currents
5. #echoes
6. #makes
7. #speak
8. #sound
9. #waves
10. #therefore
11. #conversely
12. #crystals
13. #probe
14. #electrical
15. #ultrasound
16. #machine
17. #mouth
18. #receive