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本文提出了碱性向下焊条的主要冶金特点,对焊条的操作工艺作了详细介绍,并列出了在船厂焊接试验的各项性能数据。
This paper presents the main metallurgical features of the alkaline downwards welding rod, details the operation of the welding rod, and lists the performance data of the welding test at the shipyard.