双层船 double-decker | 双层船底 double bottom | 双层车体 double-deck bus body | 双层轮胎 two ply tyre | 双层透镜 double-layer lens | 双层门 two storied gate | 双层面纱 yashmak | 双层黄金市场 two-tier gold market | 双峰驼 two-humped camel | 双峰骆驼 a Bactrian camel | 双工 duplex operation | 双工传真机 duplex facsimile equipment | 双工传输 duplex transmission | 双工信道 duplex channel | 双工制 duplex system | 双工发送 duplex transmission | 双工接收 double reception | 双工控制 duplex control | 双工电报 duplex telegraph | 双工电路 duplicate circuitry | 双工计算机 duplex computer | 双幅 double width | 双幅斗 double-margined door | 双幅绸子 two widths of silk | 双幻核 double-magic nucleus |
| 双幻核元素 double-magic element | 双座 two-seater | 双座小汽车 voiturette | 双座敞蓬轿车 roadster | 双座椅 love seat | 双座歼击机 two seat fighter | 双座轿车 grand touring car | 双座飞机 two-seater plane | 双座高速敞篷汽车 speedster | 双开道岔 double turnout | 双式帐簿 double-entry bookkeeping | 双引号 double quotation marks | 双引擎飞机 twin-motored plane | 双弯头 double bend | 双态 bifurcation | 双态元件 binary element | 双态变数 binary-state variable | 双态操作 biconditional operation | 双态电路 two-state circuit | 双态装置 two-state device | 双态语句 biconditional statement | 双态通信 binary signalling | 双户住宅 two-family house | 双手 both hands | 双手加额 place one's hands together a... |
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