
Heavy Hinged Doors On Ships - Part 1: Weathertight (iso-type), Classification, Technical Delivery Conditions
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Heavy Hinged Doors On Ships - Part 1: Weathertight (iso-type), Classification, Technical Delivery Conditions
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频