Receptionist in an attorney's office and a welder at a construction site.
律师事务所的接待员和建筑工地的焊工。
The welder traceability at the finished construction elements is not ensured.
在完成的建筑元素焊机可追溯性得不到保证。
The marked character of inner welder is its high jointing speed and can confirm welding quality. It is one of the most important instruments in mechanization and efficiency in pipe construction.
内焊机的显著特点是根焊速度快、确保焊接质量，是管道施工实施机械化、高效化焊接的关键设备之一。
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