短語詞組短語geometrical E optics 幾何光學geometrical electron optics 幾何電子光學Geometrical -optics approximation 幾何光學近似electron geometrical optics [光]電子幾何光學geometrical optics ray 幾何光束similar geometrical optics formula 類幾何光學公式Modern Geometrical Optics 現(xiàn)代幾何光學geometrical optics limit 幾何光學極限 返回 geometrical optics