contact arm

英 美
  • 接触臂
  • arm n.臂;扶手;袖子n.武器;军种vt.武装;装备(复)arms:军事行动;纹章;兵役.
  • contact n.接触;联系;熟人v.(与)联系;(与)接触adj.接触的
Noun:
  1. contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet