yupeifeng2004 发表于 2020-9-4 13:55:56

ISO 6336-5-2016

ISO 6336-5-2016 Calculation of load capacity of spur and helical gears — Part 5: Strength and quality of materials

admin 发表于 2020-9-5 10:29:15

谢谢您的分享,金币已奖励!
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