一、引言 通过木材介电系数的研究能够了解木材分子的结构、木材与水分相互作用的机理和木材在高频电磁场作用下的行为,从而为进一步了解木材的超微结构以及为木材加工和木材电热处理提供理论根据。木材介电系数与木材含水率及木材密度相关性的知识,为非破坏性测量木材含水率和木材密度提供了有效的途径。因此在不同频率下,研究木材的 I. INTRODUCTION The study on the dielectric constant of wood can understand the structure of wood molecules, the mechanism of the interaction between wood and water and the behavior of wood under high-frequency electromagnetic fields. In order to further understand the ultrastructure of wood and to understand the characteristics of wood processing and wood Electrothermal treatment provides the theoretical basis. Knowledge of wood dielectric coefficient and wood moisture content and wood density provides an effective way to non-destructively measure wood moisture content and wood density. So at different frequencies, researching wood