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| 51. | leak detection system |
| 检漏系统 |
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| 52. | differential leak detector |
| 差动检漏器 |
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| 53. | air leak tachometer |
| 漏气式转速表 |
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| 54. | no leak gradient |
| 无泄漏压降线 |
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| 55. | helium leak detecter |
| 氧气探漏器 |
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| 56. | leak sealing kit |
| 泄漏密封器材 |
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| 57. | auto-leak transformer |
| 耦合自耦变压器 |
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| 58. | vacuum leak detector |
| 真空检漏器 |
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| 59. | ultrasonic leak detection |
| 超声检漏 |
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| 60. | leak-testing apparatus |
| 密封性检验仪 |
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