“罗朗”是个多义词，它可以指罗朗（西南大学外国语学院副教授）, 罗朗（上海工程技术大学艺术设计学院教授）。
在数学中经常要用到复变函数在极点邻域内展开的罗朗级数。
It is widely used to develop complex functions into Laurent series at the neighborhood of a pole.
利用解析函数的保角变换与罗朗级数展开，获得了轴向剪切模量的封闭公式。
The axial shear modulus has been derived in closed form by using the conformal mapping approach integrated with the Laurent expansion.
笔者在此指出了罗朗级数的系数与有理函数分解的部分分式之和的系数之间的关系，并举出应用实例。
This paper points out the relationship between the coefficient of Laurent series and that of the sum of partial fractions for rational functions. Some typical examples are presented in illustration.
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