扫描

Furthermore, the pairwise transient key is computed in advance and message integrity code is piggybacked in probing massages, which satisfies desirable security attributes and reduces the re-authentication delay.

进一步通过在扫描阶段提前计算临时会话密钥及加入消息认证码，保证了扫描过程的安全性，并减小重认证时延。

In this thesis, the phase diagram of Zn-Al binary system on 10~69.5 w% was reinvestigated by using differential scanning calorimeter, X-ray diffraction and pushrod dilatometer. The process of isothermal transformation during the aging of high-Aluminum-Zinc-based alloy was studied by using differential scanning calorimetry, and the aging behavior of the alloy was analyzed at the aspect of thermal analysis kinetics. The change of microstructure which the alloy was being heated was observed on high-temperature metallurgical microscope. The microstructure and wear-friction properties were compared among the alloys treated with several different heat treatment processes, and a model for heat treatment processes was proposed based on artificial neural network,so as to predict the relationship between friction coefficient and parameters of aging treatment such as aging temperature and time.

本文采用高温X射线衍射、示差扫描量热分析、热膨胀等方法重新测定含锌量范围为10％～69.5％的Zn-Al系二元相图，利用示差扫描量热分析法，研究高铝锌基合金时效等温转变过程，并从热分析动力学的角度分析高铝锌基合金合金时效行为；使用高温金相显微镜观察合金加热时的组织变化；比较几种不同热处理工艺对高铝锌基合金显微组织与耐磨性能的影响并利用人工神经网络建立高铝锌基合金热处理工艺模型，预测合金摩擦系数随时效温度及时间变化规律。

Results The 56 cases (tumor in 32, infection in 11, haematoma in 9 and multiple scleroses in 4) with cerebral nonischemic lesions showed hyperintensity or slight hyperintensity in DWI.

常规MRI T2WI、T1WI扫描图像，弥散成像及增强扫描在非缺血性颅脑病变的定性诊断中具有重要意义。

Scans are also limited: you can tell the program what to scan, but not what to look for, so forget about toggling heuristics or rootkits.

扫描也是有限的：你可以告诉扫描程序是什么，而不是寻找什么，所以忘了切换启发式或者rootkits。

Have透扫feature, one can scan transparencies, and the other is to scan the negatives directly.

拥有透扫功能后，一是可以扫描透明胶片，二是可以直接扫描底片。

NTSC scanning equipment presents images at the 24 Hz standard, but transposes them to the 29.97 Hz scanning rate.

NTSC扫描显示设备以24Hz的标准切换图像，但要将其转换为29.97的扫描频率。

The membranes were characterized by X-ray diffraction, Fourier transform infrared, Scanning electron microscope, Transmission electron microscope, Differential Scanning Calorimetry and contact angle meter, and their swelling and sorption properties, diffusion properties, and pervaporation properties were investigated systematically.

利用X一射线衍射、红外光谱、扫描电镜和透射电镜、差示扫描量热仪以及接触角分析等手段对膜的微观形态进行表征，系统研究了膜的溶胀吸附、扩散以及渗透蒸发性能。

The equation of ESCDAC is presented. Secondly, Based on this equation and the independent characteristic of observation valves, the ESR of the azimuth measurement error is presented by full - difference of the measurement equation which acts as the precision of ESCDAC.

然后以该方程为基础，根据该方程中各个观测量相互独立的特点，方位测量误差的均方根值可由测向方程的全微分求得，并将其作为电扫描恒差比幅测向的精度，由该精度公式可以看出，电扫描恒差比幅测向有很高的精度，并且在不同的角度上，其精度保持稳定。

The position of said examine bed on scanning plane and its sag from its nominal position can be found out according to the tangent channel of X ray along the outside near bed back and the geometric structure of X-ray emitting and detecting unit.

在通过X射线照射和探测装置扫描安置在检查床上的受检者的X射线CT设备中，根据沿切线方向向检查床背侧附近外侧前进的X射线被探测的通道位置和X射线照射和探测装置的几何结构，找到检查床在扫描平面中的位置。

With the aid of scanning electron microscope, the experiment was made about how the filter of deposition chamber influences the content of impurity in film and the result of this test showed that the structure, number of filter spacer strongly influences the impurity content of film.

在扫描电镜下观察了沉积腔的过滤对薄膜杂质含量的影响，观察结果表明：过滤挡块的数量、结构对过滤宏观粒子的效率具有很大的关系，当弧形腔中复合挡块数量4块时，在扫描电镜已很难发现有宏观粒子。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。