初识电学电路分辨不清条数极思常挠头深陷电路深处眉皱眉皱悟到摸瓜之术分辨电路有如顺藤摸瓜.在漆黑的夜里能把瓜摸得很清楚应该是贼人们的绝活吧.可是所谓“三人行,必有我师.择其善者而从之,其不善者 The first time to know the electrical circuit can not distinguish the number of poles think often scratch his head deep in the circuit deep eyebrows wrinkles to realize the touch melon technique to distinguish the circuit is like Shun Tengguagua. In the dark night can melon touch very clearly should be the thieves people’s unique skills However, the so-called "Threesomes, there must be my teacher.