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| испытание на искру 1; испытание на проход; испытание на искру 2; трассовое испытание на искру | |||
| искровая проба; испытание искры; испытание на искру; проба по искре | |||
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火花试验 : 4 phrases in 3 subjects |
| Electronics | 1 |
| General | 1 |
| Technology | 2 |
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