发布时间:2025-02-01 00:54:21
最理想的当然是超导材料,能完全隔绝磁性。一般用导磁率高的材料效果也比较好:电工软铁、铁磁材料,如铁氧体、铁镍钴合金及一些稀土合金。
e6010焊接l415mb管道设计规定返修焊口用e7018a1 焊条施工方不愿意采用后面这种焊条表示还用原焊条
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