根据吸附理论和分子间能量的变化规律来确定表面相互作用程度，以此可定义吸附层，得出吸附层 厚度的分析计算式。吸附层厚度对研究薄膜润滑是最关键的因素，是薄膜与厚膜不同分析的关键点。根据分子 相互作用的基本理论及流体力学的基本定义得出指数型粘度修正的表达式，用于确定微小间隙内流体粘度的变 化规律，从而建立薄膜润滑理论模型，计算薄膜润滑轴承的特性。

Based on adsorbent theory and the law of energy change, the degree of interaction on the surface is determined. The adsorbent layer is defined. Analysis calculation formula on the thickness of adsorbent layer is obtained. The thickness of adsorbent layer is the most critical factor for thin film lubrication research, and is a critical point to the difference between thin film and thick film analyzed. According to the theory of interaction of molecules and basic definition of hydromechanics, correcting model of viscosity with exponential function is derived. It can be used to determine the law of change of fluid viscosity in micro-clearance, and thus the rationale is provided for theoretic model of thin film lubrication established.