本文件规定了普通物理气相沉积（PVD）多层硬质涂层的组成、结构和性能的评估标准，指出了通过蒸发、溅射或相关非化学方式产生材料源的真空沉积方法。

This document specifies the evaluation standard of the composition, structure and properties of multi-layer hard coatings by common physical vapor deposition (PVD), indicating a vacuum deposition method that produces a material source by evaporation, sputtering or related non-chemical ways.