Thought the WKB method is one effective method.
认为WKB法是一种行之有效的方法。
Therefore, the WKB method is useful in the non - even wave guide.
因此，可以把WKB方法直接用到非均匀波导中。
By using the WKB method and slowly-varying wave packet theory the main cause for the size change in Tropical Cyclone is analyzed.
应用小参数方法和缓变波包理论分析了热带气旋尺度变化的主要原因。
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