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special equipment sealing test
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special equipment sealing test
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工学
特种设备检验检测
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special equipment sealing test
特种设备密封试验
对承压类特种设备中的压力容器、压力管道、锅炉及附件进行的气密性试验或泄漏性试验。
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supplementary education
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Supplementary Law on Printing of the Ministry of Industry
supplementary lens
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