frequency hopper
| direct-sequence modulation
| frequency hopper abbr. | |
| oil | 跳频器 |
| direct sequence modulation abbr. | |
| telecom. | 直接序列调制 |
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| 跳频器 | |||
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frequency hopper : 2 phrases in 2 subjects |
| Information technology | 1 |
| Telecommunications | 1 |