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| 脉宽调制脉冲 | |||
| 可调宽度脉冲; 可调〔可变〕宽度脉冲 | |||
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| 可调宽度脉冲 | |||
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variable-length pulse : 4 phrases in 2 subjects |
| Earth sciences | 1 |
| Electronics | 3 |
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