CO2气保焊条件下ZG20MnMo钢热影响区氢致裂纹的研究
CO2기보한조건하ZG20MnMo강열영향구경치렬문적연구
Study on Hydrogen-Induced Cracking (HIC) of 20MnMo Cast Steel in Heat Affected Zone(HAZ) Using CO2 Gas Shielded Welding Process
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