hgundas 发表于 2020-5-15 18:12:29

BS EN 10247:2017 Micrographic examination of the non-metallic inclusion content




BS EN 10247:2017
Micrographic examination of the non-metallic
inclusion content of steels using standard pictures

admin 发表于 2020-5-20 06:46:53

谢谢您的分享，金币已奖励!

shenshusong 发表于 2020-5-22 15:56:12

感谢分享，以后经常打卡，多多分享，学无止境。
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