The SNR of the parallel-collected images is relevant to the geometric shape and the position of the coil and is influenced by the reconstruction method and the sampling mode.
并行采集图像的SNR，不仅与线圈的几何形态和位置有关，还受重建方法及采样模式的影响。
U sing a method of adding curved lines and adjusting install mode of the pad-roller, we also can get shape curve equations of the roller body and an effect of even pad rolling.
均匀轧辊可获得均匀及不同形状的轧点连线，利用叠加曲线的方法，得出轧辊辊体的轮廓曲线方程，通过对轧辊安装方式的调整，可获得均匀轧辊的效果。
It is difficult to reliably determine blade's vibration mode shape with conventional measurement method.
传统的测量方法难以可靠地确定叶片的振型。
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