yupeifeng2004 发表于 2020-9-4 13:57:27

ISO 6336-6-2019

ISO 6336-6-2019 Calculation of load capacity of spur and helical gears — Part 6: Calculation of service life under variable load

admin 发表于 2020-9-5 10:29:18

谢谢您的分享,金币已奖励!
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