一阶近似耦合 FOAC
完备的一阶近似函数 complete first order approximation
透过一阶微分近似法 first-order differential approximation
一阶平均球近似 First-order mean-spherical approximation ; FMSA
结合一阶平均球近似 First-order mean-spherical approximation
一阶平均球形近似 FMSA
一阶平均球近似理论 FMSA ; first-order mean-spherical approximation theory
和一阶平均球近似理论 first-order mean-spherical approximation theory
简正波具有驻波性质，基本已反映在一阶近似解中。
Indoing SOS the standing wave nature of the solution is emphasized.
以圆光纤为例，讨论了一阶近似本地场形式及基模场在最大值处的场位移。
Taking the circular fibres for the example, the first order correction local field and field shift in the fundamental mode peak field are discussed.
运用泰勒展开的一阶近似估计推导过定点的指数曲线的非线性直接估计公式。
Nonlinear directly estimating formula for exponential curve which, through fixed point, was derived, by using first order approximation of Taylor expansion.
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