Dowson’s film thickness relationship is used in the bearing industry and miscellaneous organizations (ISO, DIN, and FVA) for defining the Lamda ratio (film thickness/roughness) or Kappa ratio (viscosity/reference viscosity) and corresponding lubrication factor affecting bearing life. The film thickness is also used for defining the rolling element–race shear rate, hence traction force, defining bearing torque and power losses. Traction forces can also explain rolling element acceleration, skidding, risk of cage failure, and smearing.

中文翻译：

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道森教授对轴承行业的贡献

Dowson 的油膜厚度关系在轴承行业和其他组织（ISO、DIN 和 FVA）中用于定义 Lamda 比（油膜厚度/粗糙度）或 Kappa 比（粘度/参考粘度）以及相应的影响轴承寿命的润滑系数。油膜厚度也用于定义滚动体 - 滚道剪切率，从而定义牵引力，定义轴承扭矩和功率损失。牵引力也可以解释滚动体加速度、打滑、保持架失效的风险和拖尾。