He is good at rapid calculation, and can immediately tell the answer of an arithmetic formula on seeing it. 他的速算能力很强，看过算式后，得数就能脱口而出。
The rotor current formula of this kind of generator is deduced when considering the stator harmonic stationary magnetomotive force with very simple method in this paper. 在考虑了定子高次谐波恒定磁势作用的情况下，用极为简便的方法推导出符合实际的转子的电流计算式。
