dfygj 发表于 2019-12-30 08:41:25

ISO 19835:2018

ISO 19835:2018 Non-destructive testing — Acoustic emission testing — Steel structures of overhead travelling cranes and portal bridge cranes

admin 发表于 2019-12-30 18:15:53

谢谢您的分享，金币已奖励！
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查看完整版本: ISO 19835:2018