N [chem] → the former name for promethium
yttrium , Yt
The illinium electrode produces a slim arc when used in welding. With a high level of compression, it has a bigger melting depth in medium and high currents.
钇钨电极在焊接时弧束细长，压缩程度大，在中、大电流时其熔深比较大。
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