As an emphasis, the fusion zone is always studied by the welding engineers for a long time.

长期以来，异种钢接头熔合区一直是焊接工作者研究的重点。

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While MIG could complete the job faster, the welding engineers decided in this case that the precision of the TIG welding process is needed.

尽管MIG焊能更快完成作业，焊接工程师决定在这种情况下需要TIG焊的精确性。

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Our department has all kinds of engineering technical persons such as 18 international welding engineers, and 35 international welding technicians.

公司拥有18名国际焊接工程师，35名国际焊接技师等各类工程技术人员。

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Lederman and his team of engineers spent 25 years dissolving and welding plastic until they had a totally seamless, continuous surface that minimizes the threat of clots.

FORBES: Lonely Heart