单词	铁数
释义	铁数iron number
随便看	grounding insulation grounding inversion grounding jumper grounding line grounding of pole grounding outlet grounding pad grounding plane grounding plate grounding resistance grounding resistance grounding resistor grounding-- run aground-- strand grounding; run aground; strand groundings grounding screw grounding stick for live working grounding strap grounding surge grounding switch grounding switch for busbar grounding system grounding system, earthing system grounding terminal grounding transformer