您要查找的是不是：
- A1-Cr二元渗层 Al - Cr binary layers
- 层 layer
- Ni-Cr二元合金 Ni-Cr binary alloy
- Al-Ti二元渗层 Al-Ti binary layers
- 渗 to seep
- 多层 multilayer
- 单层 monolayer
- 渗流 seepage
- 三层 three-layer
- 渗碳 carburization
- 第一层 first floor
- 内层 lining
- 薄层 folium
- 垫层 cushion coat
- 层数 number of plies
- 层高 height between floors
- 层压 lamination
- 层板 plywood
- 层的 stratal
- 两层 two-layer
