1什么是超导现象所谓“超导现象”，一般来说，就是已为人们所知的把物质冷却到非常低的温度时电阻变为零的现象。并且，还知道它所表现的是磁通不能进入超导体内部、孩通密度为零的理想反磁性效应（反效应）。悬浮铁道利用电阻变为零这一点，具有下述特征：（1）无损运载大电 1 What is superconductivity? The so-called “superconductivity phenomenon” is, in general, a phenomenon known as zero resistance when materials are cooled to very low temperatures. And, it is also known that it represents the ideal diamagnetic effect (counter-effect) that the magnetic flux can not enter the superconductor and the child density is zero. The point at which the suspended railway tracks the use of resistance becomes zero, with the following characteristics: (1)