The multi polar coordinate and complex function are used to put forward an approximate analysis method for scattering of steady P wave around a circular lining in half space.

本文采用多极坐标和复变函数方法针对半无限空间中P波在一衬砌周围的散射问题提出了一种近似求解分析方法。

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With lining, and a straw belt; can do half-length skirt, you can also do Bra Dress.

有内衬，配草编腰带一条；可以做半身长裙，也可以做抹胸连衣裙。

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China's steel production rose 15% year on year in November after flat-lining in the first half of the year.

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