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AWS A5.23/A5.23M:2007-Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
پاورپوینت عناصر تشکیل دهنده منظرفضای شهری
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IEC 60974:2014-Arc welding equipment – Part 10: Electromagnetic compatibility (EMC) requirements