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MAGNETIC CORE FOR HF-WELDING OF STRAIGHT-SEAM PIPES
MAGNETIC CORE FOR HF-WELDING OF STRAIGHT-SEAM PIPES
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机译:直缝管高频焊接的磁芯
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摘要
the invention относитс production пр мошовных pipes of small diameter. the purpose of изобретени - efficiency and durability магнитопровода in work. a ferrite element (fe) 2 provided on the holder 3
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