一般多项式都可以展开为正交多项式的级数形式，而勒让德多项式、厄米特多项式和拉盖尔多项式都是典型的正交多项式。
All ordinary polynomials have series expansion of orthogonal polynomials, while Legendre polynomials, Hermite polynomials and Laguerre polynomials are special orthogonal polynomials.
假定波浪为正弦波，利用曲线积分和幂级数展开推导出板形公差。
Provided that the buckle as the sine-wave, the shape tolerance can be deduced by using the power series expansion as well as the curve integration.
这些因变量展开为球函数的级数形式并在15处作菱形截断。
The dependent variables are expanded in series of spherical harmonics truncated rhomboidally at wavenumber 15.
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