分别采用 LLP 变分方法和微扰方法研究了圆柱形自由量子线的极化子效应, 在计算中考虑了类体纵光学声子模及表面声子模的贡献。(The polaron effects of cylindrical free quantum wires are studied by using the LLP variational method and perturbation method respectively. The contribution of the bulk longitudinal optical phonon modes and the surface phonon modes is considered.)