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grouped-frequency
| operation
| grouped frequency | |
| tech. | 分组频率 |
| operation | |
| gen. | 运作 |
| hydroel.st. | 运行; 操作 |
| IMF. | 经营; 操作 |
| math. | 函数; 运算 |
| sport. med. | 手术 |
| |||
| 频率组合的 | |||
| |||
| 分组频率 | |||
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grouped-frequency operation : 7 phrases in 4 subjects |
| Air defense | 1 |
| Business | 2 |
| Information technology | 1 |
| Technology | 3 |
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