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标题:
ISO 6336-6-2019
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作者:
yupeifeng2004
时间:
2020-9-4 13:57:27
标题:
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
作者:
admin
时间:
2020-9-5 10:29:18
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