四层

四层 [sì céng]

1. ■ four layers; four-layer; four storeys; four-storey; four-storeyed

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常用词组

1. ■ 四层半导体开关器件 binistor;

2. ■ 四层二极管 four-layer diode; gateless;

3. ■ 四层甲板船fourdecker;

4. ■ 四层结构{半} four-layer structure;

5. ■ 四层器件 {半} four-layer device