您要查找的是不是：
- 分叉E层bifurcated E layer
- 分散e层sporadic e layer
- 层layer
- 时现E层sporadic E layer
- 我的舱位在E层甲板.My cabin is on E deck.
- 突发E层sporadic E
- 多层multilayer
- 单层monolayer
- 三层three-layer
- 第一层first floor
- 极光时现E层auroral sporadic E layer
- 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
