本文提出核与电子偶极相互作用和自旋扩散两种作用在被吸附到固体多电子表面上的分子弛豫起着重要作用，给出了自旋晶格弛豫时间（Ｔ＿（１ｅ））和相关时间（τ＿ｃ））的关系：Ｔ，式中ｋ对给定固体是常数。吸附在硅胶上甲苯的弛豫数据可用此式描述。得到了甲苯中甲基在不同温度下的τ＿ｃ。，它们在３７４Ｋ到２４０Ｋ间的相关时间在３．５６×１０￣（－９）ｓ到５．７６×１０￣（－８）ｓ范围。由此计算出其活化能为１５．０ｋＪ／ｍｏｌ。 In this paper, we propose that both the dipole interaction and the spin diffusion of electrons play an important role in the molecular relaxation which is adsorbed onto the solid multi-electron surface. The spin lattice relaxation time (T 1e) And related time (τ_c)): T, where k is constant for a given solid. The relaxation data of toluene adsorbed on silica gel can be described by this equation. Toluene methyl was obtained at different temperatures τ_c. , Their correlation time between 374K and 240K ranged from 3.56 × 10 -9 s to 5.76 × 10 -8 s -1. From this calculation, the activation energy is 15.0 kJ / mol.