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1.The engineer used a stud welding gun to repair the damaged part ofthe machine.
工程师用焊接枪修复了机器的损坏部分。
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2. The construction workers wereusing stud welding guns toreinforce the walls.
建筑工人正在使用焊接枪加固墙壁。
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3. The technician was demonstrating howto use a stud weldinggun effectively.
技术员正在演示如何有效地使用焊接枪。