Ct usually demonstrates a high attenuation region surrounded by a halo of abnormally low attenuation, consistent with acute hemorrhage and secondary edema, respectively.
CT上经常显示一个高信号衰减区外周围绕一圈低信号衰减光晕，这种影像与相应的出血和继发性水肿是相一致的。
Assuming a trilinear geometrical spreading model, we obtained the attenuation function in Guangdong region.
采用三段几何衰减模型拟合，得到了广东地区的几何衰减函数。
Objective the variations of the site and shape of focal region for a concave spherical ultrasound transducer in the case of high sound intensity and stronger attenuation were studied.
目的研究凹球面超声换能器的声焦域在高声强和媒质有较大衰减情况下，其形状和几何位置的变化。
It is found that the star_shaped nozzle jet has a shorter initial section and slower velocity attenuation along the jet centerline in the main region than the round nozzle jet.
实验发现，星形喷嘴射流与普通圆射流相比，其射流初始段较短，但基本段内速度随喷距衰减的速率较低。
Based on the observed data of strong motion acceleration in Yunnan region, the surface attenuation pattern at horizontal and vertical peak acceleration is studied by regressive analyzing method.
根据云南地区的实测强震加速度资料，采用回归分析法研究了云南地区的地面水平、垂直峰值加速度衰减规律。
In view of the higher computation accuracy of the attenuation standard of cutoff waveguides, the discussion of this paper paid more attention to the cutoff region.
鉴于截止波导衰减标准的计算精确度要求很高，本文的讨论重点放在截止区。
The profile which has a wide region of peak value of tangential wind and a longer radius of maximum wind, corresponds with the northern-turn track and the attenuation of intensity.
切向风速廓线上峰值区宽平，最大风速半径较大时，台风呈北折转向的异常路径，强度易于衰减。
After ultraviolet irradiation, the fiber attenuation increases obviously at several absorption peaks, whereas the value in low absorption region remains almost no change.
此光纤经紫外辐照后吸收峰处损耗明显增加，而低损耗区损耗几乎不变。
The invention relates to a projection system for producing attenuation components of projection data of a region of interest.
本发明涉及一种投影系统，用于产生感兴趣区的投影数据的衰减分量。
The invention relates to a projection system for producing attenuation components of projection data of a region of interest.
本发明涉及一种投影系统，用于产生感兴趣区的投影数据的衰减分量。
应用推荐