中文摘要：

采用Jordan-Wigner变换和Bogoliubov理论研究三角链的热容量．结果表明，在无外磁场条件下，系统的热容量随阻挫强度的增加双峰结构逐渐消失，这是由于系统二聚化态的反铁磁热力学激发．当阻挫为0．2并加入外场时，系统的热容量曲线的双峰结构消失，这是由于系统长程磁有序的产生．

英文摘要：

We use Jordan-Wigner transform and Bogoliubov theory to study specific heat of triangular chains. In the absence of external magnetic field, it shows that doublet-peak structure disappears gradually as specific heat of a frustration system increases, which is due to antiferromagenetic exciiation of spins in dimer state. As frustration is set 0. 2 and applied external magenetic field, disappearence of specific heat double structure is due to occurrence of long-range magnetic order.