四层

• four layers; four-layer; four storeys; four-storey; four-storeyed

参考释义

四层 [sì céng]

• -
• 短语
  四层半导体开关器件 binistor
  四层二极管 four-layer diode; gateless
  四层甲板船 fourdecker
  四层结构 {半} four-layer structure
  四层器件 {半} four-layer device