
Gas welding equipment - Pressure gauges used in welding, cutting and allied processes (ISO 5171:2009)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Gas welding equipment - Pressure gauges used in welding, cutting and allied processes (ISO 5171:2009)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频