Because the total self-inductancecoefficient is the sum of all the solenoids? Coefficients, the formulas are not valid in same of opposite directions.
串联后的总自感系数等于各螺线管自感系数之和，所以顺接和反接公式都不成立。
2
The measuring of self-inductancecoefficient by means of direct current bridge method has reduced the difficult and improved the precision of measuring.
传统测量电感的自感系数是用交流电桥，它存在平衡点较难找，并且在空间杂散信号干扰下很容易产生误差。
3
Mutual inductancecoefficient between transmission lines is an important parameter for the calculation of longitudinal electromotive force and longitudinal voltage.