GB/Z 3481.2-2025
齿轮 轮齿的磨损和损伤 第2部分:补充信息
Gears—Wear and damage to gear teeth—Part 2: Supplementary information
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GB/Z 3481.2-2025
Gears—Wear and damage to gear teeth—Part 2: Supplementary information
GB/Z 109-2025
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