To investigate MR manifestation of lumbar myeloid inverse conversion and differential diagnosis of common pathogeny.
目的：研究腰椎骨髓逆转换MR表现及其常见病因的鉴别诊断。
Objective: To investigate MR manifestation of lumbar myeloid inverse conversion and differential diagnosis of common pathogeny.
目的研究腰椎骨髓逆转换MR表现及其常见病因的鉴别诊断。
The formulas of mode conversion are derived and effects of optical beam power, initial beam width radius and inverse of the radius of curvature of the wave front on the mode conversion are analysed.
导出模式变换公式，分析了光束功率、光束初始的束宽半径和波前曲率半径的倒数对模式变换的影响。
It put forward an effective new method to resolve the inverse position by using the conversion of coordinates and projection in analytic geometry, the method was simulated and verified by MATLAB.
运用解析几何中的坐标变换和投影，得出一种有效求解位置反解的新方法，通过MATLAB软件对该方法进行了仿真和验证。
It put forward an effective new method to resolve the inverse position by using the conversion of coordinates and projection in analytic geometry, the method was simulated and verified by MATLAB.
运用解析几何中的坐标变换和投影，得出一种有效求解位置反解的新方法，通过MATLAB软件对该方法进行了仿真和验证。
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