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| 31. | spark capacitor |
| 消火花电容器 |
|
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| 32. | spark test apparatus |
| 火花试验装置 |
|
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| 33. | spark leak detector |
| 火花检漏仪 |
|
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| 34. | spark intensifier |
| 火花增强器 |
|
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| 35. | spark sintering machine |
| 火花烧结机 |
|
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| 36. | spark protractor |
| 火花时间测定器 |
|
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| 37. | extinction of spark |
| 火花消除 |
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| 38. | condensed spark |
| 高电容火花 |
|
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| 39. | spark preventer |
| 火花防止器 |
|
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| 40. | spark extinguisher |
| 灭火花器 |
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