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- 双D／A技术Double D/A technique
- 双pair
- 双D窑Double "D" lime kiln
- 双D盒系统two-dee system
- 双击double-click
- 双D形拉刀double D broach
- 不仅A而且not merely A but also B
- 双语diglossia
- A股A-share
- 双赢Win-win
- 双D雷达观察dual-Doppler radar observation
- A/D转换技术A/D conversion technique
- 双色two-tone color
- 双线crewel
- 双字double word
- D／A控制技术D/A control technology
- 双倍doubling
- 双核dicaryon
- A/D转换器A/D converter
- 双语的bilingual
