双

In a typical fuel cell, the diatomic hydrogen gas enters one side of the cell, diatomic oxygen gas enters the other side.

典型的燃料电池，双原氢气体进入电池的一边，而双原氧气体进入另一边。

A new type of difunctional initiator (benzyl dibromide, ethyl dibromoacetate) was proposed in this paper and used to synthesize poly based triblock copolymers such as PSt-PBA-PSt, PMMA-PBA-PMMA.

本论文提出一种新型ATRP双官能团引发剂(如α，α-二溴化苄、α，α-二溴乙酸乙酯)，并用聚合反应速度法、GPC法、核磁分析法进行双官能度的验证，并通过两步聚合合成以聚丙烯酸酯为中间嵌段、苯乙烯或甲基丙烯酸甲酯为两端嵌段的ABA型三嵌段共聚物。

The highlighted skin regions are compensated based on the dichromatic reflection model.

一方面降低了算法复杂度，另一方面又可以在序贯主分量分析中提出特征值比值，迅速而准确地自动检测是否有皮肤高光区域的存在，同时还可以鲁棒地确定皮肤双色反射矢量，应用双色反射模型进行肤色高光区域的辐射校正。

Integration.The double color of this design's circulating colourful light controller is to use to count a machine and translate the code machine to carry out, its characteristics gives out light diode with a pair of colors, can flush the color and green and dichromatic light.

本次设计的双色循环彩灯控制器就是用计数器和译码器来实现，其特点用双色发光二极管，能发红色和绿色两色光。

The applications of the theory in robot translation parameter computation and in Qualitative Scene Model construction are presented.(3) Intrinsic Images and color constancy of Real Color Images Based on the Dichromatic Reflection Model proposed by Klinker [55] , it is the NO. 1 for this paper to measure the spectral relationship of a CCD color camera, to reestablish the linear relationship, to separate the illuminant and object color components in real color images, and to extract the intrinsic image and highlight image from the real color image, as well as to eliminate the influences of highlights upon the usual image segmentation algorithm.

以Klinker[55]等提出的"双色反射模型"为基础，首次测定了彩色摄像机的光强----灰度响应关系，恢复了摄像机的整体线性关系；首次在真实彩色图像（即由彩色摄像机直接获取的图像）中成功地分离了光照和景物的颜色；成功地抽取了本色图像和耀斑图像；在此基础上，又将双色反射模型成功地运用到真实彩色图像的分割方面，消除了耀斑对分割的影响。

Transgenic tobacco and rice calli both showed β-glucuronidase activity, indicating that RRD3 can act as a promoter in both monocot and dicot plants.

基于RRD3的双效启动子特性，我们设计并构建了植物通用双元RNAi载体pCRiRRD3，适于进行植物的RNA干涉实验研究。

The weeds in wheat field in the basin, river valley and plain area are generally taken as the main damage for agricultural crops. There is little difference of damage extent between dicotyledon and monocotyledon in mountain area and relatively low oasis plain.

盆地、河谷区域和平原区麦田杂草总体上以双子叶杂草为主；高海拔山地麦区以单子叶杂草为主；山地与海拔相对低的绿洲平原之间的过渡麦区，单、双子叶杂草危害程度基本相同。

And the devices'properties and improve the properties to prepare the artificial boundary. The bi-epitaxial YBCO superconducting film with 45°grain boundary in a-b plane was made for the first time in China in this article by magnetic sputtering instrument that was designed and fabricated by ourselves. The x-ray θ～ 2θ scan 、Ф scan、rocking curve、non-symmetry diffraction and SEM、 TEM、AES etc. were utilized in the study.

为此，本工作采用自行设计制造的全金属密封超高真空磁控溅射设备，利用x射线θ～2θ扫描、Ф扫描、摇摆曲线、非对称衍射及SEM、TEM、AES等分析测试手段，在国内首次、也是至今唯一的一家，制得a—b平面内具有45°人工晶界的双外延YBCO超导薄膜，并进而得到双外延晶界Josephson结。

The influence of diglyceride, a new food additives, on the properties of instant cooked noodles has been studied experimentally.

通过实验研究了新型食品添加剂双甘酯对速食煮面性能的影响，获较低溶出率的最佳双甘酯添加量为0.1％～0.15％。

As a preliminary work we prepared bisorganozinc halides directly from diiodide and zinc powder, and investigated their reaction with acyl chloride to give diketone, the reaction mechanism also proposed on the basis of experiments and the literatures.

第三章：带官能团的双有机卤化锌试剂和酰氯的反应研究本章首次探讨了带官能团的双有机卤化锌试剂的制备及其与芳香族酰氯的反应研究。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。