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国业厂家直销500W可调电阻 瓷管绕线可变电阻 老化测试用 包邮
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厂家直销大功率刹车制动电梯伺服无烟波纹瓷管电阻HR500W
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厂家直供RX20电阻 绕线电阻 可调电阻
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RX20可调电阻500W测试老化负载瓷管绕线电阻10R25R40R50R100R200R
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大功率瓷管可调电阻负载可变绕线滑动变阻器50W100W200W500W1000W
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厂家电阻焊机专用波纹电阻器老化负载电阻器瓷管绕线电阻500W800W
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厂家直供RX20 200W 250W 300W 400W 500W 5%绿色涂漆瓷管绕线电阻
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供应 线绕固定高压制动电阻30W,50W,200W,300W,400W,500W
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源头厂家大功率线绕瓷管波纹电阻300W400W500W600W700W800W1000W
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大功率可变瓷管线绕负载放电可调电阻滑动变阻器50W100W200W500W