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| 固有圆频率 | |||
| 自然圆周频率 | |||
| 自然周频率; 自然圆弧频率; 自振圆频率 | |||
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natural circular frequency : 5 phrases in 3 subjects |
| Engineering geology | 1 |
| Nautical | 3 |
| Technology | 1 |
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