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- double conversion receiver 双变频接收机
- double frequency conversion receiver 二次变频接收机
- Complete power protection by an on-line double conversion design incorporating an aut omatic static bypass from overload and fault conditions. 两次变换真在线式设计，配合静态旁路开关，具备完善的过载和故障保护功能。
- direct conversion receiver (DCR) 直接变频接收机
- When the input Gaussian beam size is very small, the effect of walkoff is very deleterious on doubling conversion. 当入射超高斯光束口径非常小时，离散效应的存在将大大降低倍频转换效率。
- double conversion superheterodyne 双变频超外差
- He is working double tides to finish his essay. 他日夜苦干，赶写他的文章。
- I do not realize it is a double feature. 我原先不知道这是双片连映。
- Double agents live in a perpetual state of fear. 两面派永远过着提心吊胆的生活。
- I want a double room with a view. 我要一间能看到风景的双人房间。
- He was so fat that he had a double chin. 他胖得有双下巴了。
- The carpet is too thick to double up. 这地毯太厚没法折叠。
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
- Reserve double room June fourth to tenth inclusive. 预订双人房间，六月四日至十日，共六晚，望订妥复电。
- In this case, I can double for penalty. 假如这样的话，我可以叫加倍了。
- Can you tell me the rate for a double room, please? 请告诉我一间双人房的费用可以吗？
- The soldiers came at the double. 士兵们是急行军来的。
- Conversion to double from sym is not possible. 可能是要转变数据类型？？？
- A couch performs a double service. 躺椅有双重的服务。
- Look, double yellow lines you mustn't park here. 喂，这是双黄线--不能在这儿停车。
