low-hydrogen welding electrode的意思|示意
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低氢型电焊条
low-hydrogen welding electrode的网络常见释义
低氢型电焊条 ... horizontal-vertical fillet weld横向铅90度角焊缝 low-hydrogen welding electrode低氢型电焊条 metal-arc gas-s你好elded welding气掩护金属极电弧焊 ...