单词：rotary relay
rotary relay的用法和样例：
例句
- A contactor is a special type of electromechanical relay, where the contacts are attached to the armature.接触器是一种特殊类型的机电式继电器，其触点被安装在枢轴机构上。
- The high permeability of the ferromagnetic reeds in a reed relay causes a pronounced skin effect with increasing signal frequency.干簧式继电器中铁磁簧片的高磁导率会随信号频率的增加而产生很强的趋肤效应。
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