短語(yǔ)詞組短語(yǔ)elliptical -hole 橢圓孔an elliptical hole 橢圓孔elliptical hole diffraction 橢圓孔衍射plate containing an elliptical hole 橢圓孔板crack originating at elliptical hole 孔邊裂紋 返回 elliptical hole