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- Compared with the cylindrical column with the same volume and the same length, the conical column had double sample capacity, 36% higher column effi... 对与锥型柱有相同长度、相同容积的圆柱型色谱柱的柱效、样品容量及峰高的比较研究表明:锥型柱优于圆柱型柱。
- Nonreponse is a common seen problem in sample surveys. This paper deal with a ratio estimator by use of double sampling when there exsits nonresponse. 无回答是在抽样调查中常遇到的问题,本文给出了如何用双重抽样来处理存在无回答时的比率估计量。
- The new estimator has been extended to stratified double sampling and results of a computer-based random simulation study on the performance of the new estimator are reported. 同时给出新估计量的近似方差表达式。最后利用计算机随机模拟验证较正估计量对估计精度的改进。
- A CMOS readout circuit for biosensor that used a new Correlated Double Sampling (CDS) circuit was designed.The CDS circuit makes biosensor possible to obtain high sensitivity and low noise features. 为提高生物微传感器的探测灵敏度，设计了一种低噪声的生物微传感器CMOS读出电路，提出了一种新型的相关双采样（CDS）电路，对读出电路的噪声进行抑制。
- 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。
- A Study on Moving Target Detection Technique Based on Double Sample Rate 基于双采样速率的动目术检测技术研究
- 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。
- 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。
- Please double up the chair and put it aside. 请把椅子折起来放在一边。
- For strong sewing use double, not single thread. 为了缝得牢，用双线，而不要用单线。
