By comparing the average transient power supply currents, we could distinguish a fault circuit from a faultfree circuit.
通过比较两者平均动态电流的大小，我们能够区分出故障电路和无故障电路。
2
SPICE experiments were done to simulate the dynamic currents of both the fault circuits and faultfree circuits under the function of testing pairs.
对于这些测试向量对，通过SPICE软件模拟了故障电路和无故障电路在测试向量对作用下的动态电流。
3
As a kind of initiative maintenance, preventive maintenance mainly aims at prolonging service life of medical equipment, extending their fault-free time and lowering the whole life expense.