... elementary symmetric function 初等对称函数 ellipsoidal function 椭球函数、拉梅函数 elliptic function 椭圆函数 ...
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本文用球函数展开散射场，结合刚性边界条件导出了刚性目标的重构公式，并利用该公式重构了刚性球和椭球的形状。
By spherical function expansion of the scattered sound field in conjunction with rigid boundary conditions, formulas for reconstructing the shapes of rigid scattering objects are derived.
第3章主要介绍了一种基于扁长椭球波函数的超宽带成形脉冲优化设计算法。
In chapter 3, a novel optimal UWB shaping pulse design algorithm based on prolate spheroidal wave functions is described.
文中简要介绍了焊接过程数值模拟热源的各种加载模式：高斯分布函数、双椭球分布函数、生死单元方法。
The paper briefly introduces several heat source models in numerical simulation of welding processes, including Gaussian distribution, double-ellipsoid distribution and birth-death element.
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