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。
应用推荐