The property of the near field subwavelength imaging in a metal thin-film structure is investigated using finite difference time domain method based on Drude model.
采用基于等离子体物理模型的时域有限差分方法模拟了金属薄膜近场成像特性；采用薄膜传输矩阵方法计算了金属薄膜对倏逝波分量的放大作用。
Although the difference is little in principle between airplane imaging and ship imaging, the pose variation of ship is more complicate for the fluctuation of sea, so it need to be studied specially.
虽然舰船成像与飞机成像在基本原理上没有区别，但由于海水的波动，使舰船的姿态变化比较复杂，有必要作专门的研究。
The difference between arrival at an emergency department and brain imaging was also shorter for those arriving by ambulance.
对于那些搭乘救护车和到达急诊科的患者对比，脑功能成像前者是短的。
The Noise Equivalent Temperature Difference(NETD) is a widely used performance parameter that characterizes the sensitivity of infrared imaging systems.
噪声等效温差是一个用以标志红外热成像系统灵敏度的广泛使用的参数。
The Noise Equivalent Temperature Difference(NETD)is a main function parameter of infrared imaging systems.
噪声等效温差是红外热成像系统主要性能参数之一。
But because of different imaging types, SAR image has large difference with optical image, techniques adapt to optical image registration can not be directly used to SAR image registration.
由于成像方式不同，SAR图像与光学图像具有很大差异，光学图像的配准方法直接应用于SAR图像配准中往往不能取得令人满意的效果。
Objective To investigate the difference in imaging quality and X ray dose for plain film of lumbar vertebrae and abdomen when using blue screen or green screen.
目的探讨感蓝、感绿不同的屏片体系，在腰椎和腹部平片上形成影像质量及入射剂量的差异。
Infrared Imaging Techniques can change the infrared radiation into visible images. It utilizes every part of difference of infrared radiation of objects to obtain the details of the thermal images.
红外成像技术是利用物体自身各部分对红外热辐射的差异把红外辐射图像转换为可视图像的技术。
To investigate the difference of microscopic autofluorescence imaging of normal and adenocarcinoma colonic tissue, and the autofluorescence intensity difference among the colonic tissue layers.
目的：探讨结肠正常组织和腺癌组织的显微自体荧光图像差异与肠壁不同结构层次的荧光强度差异。
According to the imaging difference of target, background clutter and noise, a moving small target detection method based on spacial high-pass filtering and N-frame track accumulating is presented.
根据目标、背景干扰和噪声在红外序列图像中的差异，提出了一种基于空间高通滤波和时间域上N帧轨迹积累的运动小目标检测方法。
The other types of statics are utilized for signal compensation in evaluating the difference among the source, receiver imaging and wave signal.
其他类型的静校正手段用以在估算震源和接收器成像和波信号差异中进行信号补偿。
Imaging examination ( CT or X-ray) of 97ears showed poor pneumatization of mastoids and there was a significant difference between involved group and control group( P< 0.01).
其中97耳CT及X线摄片结果显示，乳突气化不良程度与对照组有差异（P<0.01）。
It introduced origins of the non-imaging optical theories and its difference to the imaging optical theory.
介绍了非成像光学理论的起源以及与成像光学理论研究的区别。
Sometimes slope of stripes causes a difference in resolving power of imaging device, especially pick up tube though the same number of TVs in a taken image.
有时候倾斜条纹导致解决成像设备功率上的差异，尤其是电视摄像管尽管是在同一情况下拍摄的电视画面。
It is possible to acquire the height information of three-dimensional ground objects because of the imaging sensitivity of this method to the height difference of ground objects.
合理利用微波散射成像对地物目标高程分布的敏感性，可能获得三维目标的高度信息。
Recorded between the two groups CT guided cryoablation surgery imaging features, performance, and CT-guided radiation dose difference is statistically significant.
记录两组间CT引导下氩氦刀冷冻术中的影像学特性、表现与CT引导下辐射剂量的差异性是否有统计学意义。
The optical propagation properties of the device have been demonstrated by finite difference time domain method according to the waveguides directional coupling and self-imaging principle.
根据波导间相互耦合与自映像原理，采用时域有限差分法分析了该器件的光传输特性。
Objective To discuss the signal character and diagnosis and difference diagnosis of infectivity rachitis on low field strength MR Imaging.
目的探讨感染性脊柱炎在低场强MR的信号特征及其诊断与鉴别诊断价值。
Objective To summarize the difference between spontaneous and secondary osteonecrosis of knee joint through comparing the clinical and imaging features of the osteonecrosis in the knee joint.
目的比较自发性和继发性膝关节骨坏死的临床特点、影像学特征并总结两者的区别。
The essence to NDT infrared thermal imaging is to measure the surface temperature difference, and the bigger the temperature difference, the more sensitive the detecting.
红外热成像无损检测的本质是测量物体表面的温差，温差越大，则检灵敏度越高。
Conclusions 3d acquisition can reduce the acquisition time in clinical study. Under ordinary condition, the imaging quality of 3d makes no difference with 2d, but it is better than 2d in lower dose.
结论3d符合采集可减少临床采集时间，其图像质量在正常剂量条件下与2d采集相比无明显降低，但在低剂量条件下，3d图像质量优于2d图像。
The imaging system formed by an annular left-handed material (LHM) lens as well as the evanescent waves in the lens are simulated numerically with a finite-difference time-domain (FDTD) method.
利用时域有限差分法模拟了左手圆环形透镜的成像和透镜中的倏逝波。
CT imaging among right coronary artery, right ventricle, left ventricle and showed significant difference.
右冠状动脉、左室、右室、主肺动脉CT值差异有统计学意义。
CT imaging among right coronary artery, right ventricle, left ventricle and showed significant difference.
右冠状动脉、左室、右室、主肺动脉CT值差异有统计学意义。
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