four-level
| frequency modulation
| four-level abbr. | |
| gen. | 四层的; 四 级的 |
| auto. | 四层的 |
| frequency modulation abbr. | |
| el. meas.inst. од. | 调频 |
| IT | 频率调制 |
| sport. | 调频 |
| tech. | 频 调制; 频率调节; 频 调 |
| telecom. | 调频制; 调频质 |
| frequency-modulation abbr. | |
| gen. | 调频; 频率调制 |
| |||
| 四层的; 四能级的 | |||
| 立体交叉道路四层的 | |||
| 四能级 | |||
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four-level : 18 phrases in 8 subjects |
| Electronics | 3 |
| Literature | 1 |
| Project management | 1 |
| Space | 1 |
| Sports | 1 |
| Technology | 8 |
| Telecommunications | 2 |
| Textile industry | 1 |