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First five in vacuo eigenfrequencies of the model and the MRI geometry for the sample S2. (Unit: Hz.)
| Modes | TA | TA and cover layer | TA and cover layer | ||
|---|---|---|---|---|---|
| MRI | Model | MRI | Model | Model without posterior part | |
| 1 | 79.94 | 78.09 | 75.06 | 75.20 | 115.83 |
| 2 | 110.14 | 114.06 | 102.70 | 107.14 | 135.81 |
| 3 | 116.94 | 119.86 | 112.76 | 115.21 | 153.28 |
| 4 | 129.09 | 130.03 | 126.71 | 122.20 | 166.10 |
| 5 | 141.82 | 147.98 | 136.81 | 139.31 | 184.96 |
