The range of application of uniform geometrical theory of diffraction (UTD) is discussed. It is pointed out that UTD is valid when a source is near the diffraction edge.
讨论了一致性几何绕射理论（UTD）的适用范围，并提出其适合于源离绕射边近的处理方法。
The range of application of uniform geometrical theory of diffraction (UTD) is discussed. It is pointed out that UTD is valid when a source is near the diffraction edge.
讨论了一致性几何绕射理论（UTD）的适用范围，并提出其适合于源离绕射边近的处理方法。
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