contact arm
参考词典中contact arm的常规释义：
基本释义
- 接触臂
英英解释
1个名词解释
- contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet
[同] contact arm, wiper, wiper arm
点击查看……- contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet
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