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动态流导法真空标准装置
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动态流导法真空标准装置
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动态流导法真空标准装置
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dynamic flow method vacuum facility
动态流导法真空标准装置
基于气体连续流原理的真空计量装置。真空是指低于大气压力或大气质量密度的稀薄气体状态。
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ancient and famous tree
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