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熔化极氩弧焊设备及材料
价格
8.90元
学习有效期 长期有效
简介
教师：李爽，女，1971年8月生，1992年毕业于西安石油学院焊接工艺与设备专业，高级工程师，国际焊接工程师，国家注册安全工程师，中原油田培训中心从事焊工安全培训工作30年。
学习目录
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教师李爽
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