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special equipment sealing test
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special equipment sealing test
Encyclopedia
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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language politics
language prestige planning
language production
language production process
language protection
language purity
language Q value
language recognition
Language Reform & Language Norms of Contemporary China
language rehabilitation for aphasics
language rehabilitation training
language repertoires
language resources
language resources protection
language revitalization
language rights
language safety
language sampling
language school
language selection rules
language sense
language services
language shift
Language Situation in China
languages of Gaoshan nationality
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