春雨里 - 吴青峰, 李宇春

We present explicit infinite families of twisted torus knots that are not fibered. Our approach relies on an explicit formula for the Alexander polynomial derived in our previous work. We show that the leading coefficients of the Alexander polynomials of twisted torus knots can take arbitrary integer values, which immediately yields infinitely many examples of non-fibered twisted torus knots.

本文通过电路原理分析、实测数据对比等方法对变频电源输出 N 极对地电压浮高的原因进行分析,并以实例去验证可控电源输出 N 极对地电压浮高对实际工作电压测试的影响,以此提出解决方案。