“alternate polarity operation”的概念、定义、翻译、参考文献-科学参考

单词	alternate polarity operation
释义	alternate polarity operation [`ȯl·tǝr·nǝt pǝ`lar·ǝd·ē ´äp·ǝ`rā·shǝn] ^METALLURGY A resistance welding method which utilizes alternating polarity for the progression of weld pulses.
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