AIRBOSUN大功率可变瓷管线绕负载放电可调电阻滑动变阻器100W200W500W 50W 5欧姆

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京元采BC1大功率滑动变阻器瓷盘圆盘可调电阻20欧 500W

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瀚时恒业 BC1圆盘可调电阻瓷盘滑动变阻器 1R/功率50W

京元采BC1大功率滑动变阻器瓷盘圆盘可调电阻5K 500W