Approach to the Circuit Analysis in Combination with the Circuit Measurement Techniques

When we researched into the circuit theory, the theoreical problems of the circuits will be explicated and examimed fairly well if some circuit measurement techniques are introduced. Morover, we have discovered that the circuit measurement techniques can be effective when we demonstrate some circuit theorems. Two examples, the proffs of both the formulas for the star-delta transformation and Rosen's theorem, are given in this papaer.