对于线性模拟电路，节点电压关系函数为一次函数，函数的斜率可以作为故障模型，同时可以诊断硬故障和参数(软)故障。
For linear analog circuits, the voltage relation function is a linear function and the slope can be the fault character to diagnose both catastrophic faults and parametric faults.
该方法不仅能够同时诊断元件的硬故障和参数偏移故障，而且能够同时运用于直流测试和交流测试。
The presented approach can not only diagnose both catastrophic faults and parametric faults, but also can be applied for both DC test and ac test.
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