找不到引用DIN EN 60320-1:2021 Appliance couplers for household and similar general purposes - Part 1: General requirements (IEC 60320-1:2015 + COR1:2016 + A1:2018 + COR2:2019); German version EN 60320-1:2015 + AC:2016 + AC:2019 + A1:2021 的标准
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