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低频率
| 保护
| 低频率 | |
| bridg.constr. | low frequency |
| el.mach. | lower frequency |
| tech. | low-frequency |
| 保护 | |
| gen. | safeguard; preservation |
| environ. | conservation; preserve |
| hydroel.st. | protection |
| law | guardianship |
| |||
| low frequency | |||
| lower frequency | |||
| low-frequency | |||
| under frequency | |||
| 低频率: 90 phrases in 23 subjects |
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