unwelded 中文意思是什麼
unwelded
解釋
未焊接的-
Testing the resistance of unalloyed and low alloy steels to intergranular stress corrosion cracking by attack of nitrate medium ; welded and unwelded materials
非合金鋼和低合金鋼在受到硝酸鹽浸蝕作用時的耐晶間
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