tractive current 中文意思是什麼
tractive current
解釋
牽引流-
Specification for tractive armature direct current neutral track and line relays for railway signalling
鐵路信號用牽引電樞直流中性線撥軌繼電器和線路繼電器規范 -
Specification for tractive armature direct current neutral - polar line relays for railway signalling
鐵路信號用牽引電樞直流中性極化線路繼電器規范
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