The zero-input responses of distortionless lines are analyzed and the analytical expressions are got.
分析了无畸变线的零输入响应，导出了其响应的解析式。
The analytical expressions of power output, efficiency and ecological objective function are derived.
导出了该模型下输出功率、效率和生态学目标函数的表达式。
Thus the analytical expressions for calculating the length of voids and its circulating current loss ratio have been deduced.
导出了计算其空换位长度及相应环流损耗比值的解析式，供设计大型交流电机定子线棒时参考。
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