查询词典 phase

Methods 136 patients with suspected or diagnosed coronary artery disease were studied with 16-slice spiral CT. Choosing left and right coronary artery in the axial enhancement scanning images, previewing 10 images at 0%-100% of the cardiocycle in increments of 10%, We evaluated grade of the image quality and number of the ratable coronary artery in different reconstruction phases. We selected the most clear image of left and right coronary artery, and recorded the phase. Raw data were reconstructed with thin images at the best phase.

对136例临床诊断或拟诊冠心病的患者行16层螺旋CT冠状动脉造影，选取增强扫描R-R心动周期0%~100%的10组图像（间隔10%），评价不同重建时相冠状动脉各主要分支的图像质量等级及可评价冠状动脉数，选择显示最清晰的一组记录时相。

Simulation research on method for harmonic current detection of single-phase circuit based on instantaneous reactive power theory of three-phase circuit was presented.

提出了基于三相电路瞬时无功理论的单相电路谐波电流检测方法的仿真研究。

To deal with the measurement error induced by the motion compensation error, the phase of the target\'s barycentre is estimated to compensate the phase differences. The measured scatterers\' height and width are wrong because they are not obtained in rectangular coordinates.

建立了在目标与天线电轴间存在较大斜角情况下的干涉式逆合成孔径雷达三维成像模型，并给出了运动补偿的详细步骤，针对因目标运动补偿误差导致的干涉测量误差，提出了利用估计出的目标重心相位对相位差进行补偿的方法。

According to this method,four different 11-step algorithms with four different window functions which are rectangular window,triangle window,hanning window,and blackman window are designed. Analysis and simulation show that hanning window and blackman window with small lobes are less sensitive to errors. Seven different algorithms with the same phase shifting interval π/2 are designed by hanning window function,whose phase shifting steps are separately 5,11,15,39,51,76 and 101 steps.

选择矩形窗、三角窗、hanning窗和blackman窗生成4种11步移相算法，对振动误差和相移误差的分析验证了旁瓣小的hanning窗和blackman窗生成的算法对误差的灵敏度要小；再选择hanning窗生成了移相间距为π/2的5，11，15，39，51，76和101步7种移相算法，仿真验证了步数越多主瓣越小，对振动抑制能力越好，但需要更高的微位移器移动精度来获得有效的干涉条纹。

The slight redissolution and then coarseness of primary Si phase at higher annealing temperature had been found,but the coarsening ratio of primary Si phase was lower than that of β-Al4FeSi.

退火温度低于310℃时，δ-Al4FeSi2相未明显粗化；当退火温度高于310℃时，亚稳相δ-Al4FeSi2转变成稳定相β-Al5FeSi，β-Al5FeSi相随退火温度的提高而明显粗化。

Based on the influence of reflection phase of fibre Bragg grating on the transmission spectrum of fibre Bragg grating Fabry-Perot cavity, the reason for the error of traditional coupled mode theory when calculating the reflection phase of uniform FBG is analyzed.

基于光纤Bragg光栅反射复振幅相移对FBG法布里-珀罗腔透射谱的影响，分析了传统耦合模理论计算均匀FBG反射复振幅相移产生误差的原因。

The low frequency digital phase reflectoscope reflector in the industrial field is the general measuring tool which uses frequently, for instance the electrical network incorporation switches on when the electrical power system, requests two electrical network's electrical signals to be the same, between this request precise survey two power frequency signal phase difference.

低频数字式相位测试仪在工业领域中是经常用到的一般测量工具，比如在电力系统中电网并网合闸时，要求两电网的电信号相同，这就要求精确的测量两工频信号之间的相位差。

Besides, the spectrum property of the phase shift LPG with different phase shift in different position and parallel or cascade LPG were also analyzed and studied. The fiber gratings parameter and combination fit for refractivity measure were selected.

此外，还分析和研究了在不同位置引入不同相位跳变的相移光栅、并联长周期光纤光栅以及级联长周期光纤光栅的光谱特性，选择出适用于折射率测量的合理光栅参数及光栅组合方式。

In chapter 3, an all-optical regenerator based on self-phase and cross-phase in fiber has been researched.

通过仿真可以看到，这种再生器结构可以有效地对由于上述两种因素引起的信号畸变进行再生。

So composite deposits is a metal matrix composite material, which include a metal continuous phase and reinforcer discontinuous phase.

复合镀层是一类以基质金属为均匀连续相和以不溶性增强体为分散相的金属基复合材料。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。