The technique of isolation that enables each component in a circuit to be tested independently during an in-circuit testing procedure. 在线测试过程中，能使线路中的每一个元件独立进行测试的隔离技术。
We must modify the circuit diagram unless it is easy for the parts of the circuit to be adjusted and tested. 如果线路中各部件不便调试，我们必须修改线路图。
