短語詞組短語convergent -beam electron diffraction 會聚束電子衍射irradiation convergent -beam 聚集束照射CBIM convergent -beam imaging 會聚束成像CBED convergent -beam electron diffraction 會聚束電子衍射convergent beam unit 收斂射束裝置convergent beam microdiffraction 會聚束微繞射convergent beam electron 會聚束電子 返回 convergent beam