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开关丝
开关和保险丝
开关和保险丝 An electric switch is often on a wall near the door of a room. Two wires lead to the lamp in the room. The switch is fixed in one of them. The switch can cause a break in this wire, and then the light goes. The switch can also join the two parts of the wire again, then we get a light. Switch can control many different things. Small switches control lamps and radio sets because th
刀闸开关熔丝过负荷残留物形貌特征分析
刀闸开关熔丝过负荷残留物形貌特征分析
利用火灾痕迹物证综合实验台制备了熔丝在下属电路不同过负荷条件下的残留物,用扫描电子显微镜对熔丝践留物形貌特征进行了观察和分析。结果表明:在不同的过负荷条件下,电流越大,熔丝残留物表面氧化物越多,断口处的韧窝越大、越深。