pressure container welder
pressure container welder
压力容器焊机
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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As stipulated by"the testing regulation of container of pressure of boiler to welder", the prototype of arc welding to the joined slit must be completed through the crafts of groove by bevelling.
前言： 根据“锅炉压力容器焊工考试规则”规定， 对接缝手工电弧焊的考试试板必须采用单面焊双面成形工艺完成。
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