略語大辞典 [Opt] 27 FDM† finite difference method 有限(差分)要素法. 数値計算法の一種.finite difference method; a theoretical method to find the number of modes in MLSI(multilayer step-index) waveguides; [Opt:Math:Phys:E]. 丸善「略語大辞典」JLogosID : 11874696