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Bottom-thinning defect analysis.
| average | velocity | calculated | actual | ||
|---|---|---|---|---|---|
| time (μs) | (m s−1) | thickness (mm) | thickness (mm) | error rate (%) | s.d. (mm) |
| 11.35 | 3167.60 | 17.98 | 18.00 | 0.11 | 0.088 |
| 10.15 | 3167.60 | 16.07 | 16.00 | 0.44 | 0.059 |
| 8.85 | 3167.60 | 14.01 | 14.00 | 0.07 | 0.026 |
| 7.52 | 3167.60 | 11.92 | 12.00 | 0.67 | 0.015 |
