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博世手电钻如何知道真伪

更新时间: 2020-09-19 00:00:00     

博世手电钻分辨真伪的方法如下:

1、看重量,如果有可比物,真假掂量一下就知道,真的是铜心,明显重一些;

2、看火花,从散热孔往内观察,真品工作时火花呈绿色均匀,而且细小;

3、听声音,正品的声音均匀,没的杂音;

4、看塑胶外壳的硬度,正品在水泥地上稍用力拖过,表面不会轻易出现印痕即可。

关键词: 电钻 如何 知道 真伪

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