短語詞組短語circular r hole diffraction 圓孔衍射;囿孔衍射circular ring hole 圓環(huán)孔Circular mounting hole 圓形安裝孔circular -hole castellated beam 圓孔蜂窩梁nanometer circular hole 納米圓孔spherical circular hole 球麪圓孔plate with circular hole 含圓孔板plain circular hole 平圓孔 返回 circular hole