短語詞組短語focusing g coil 聚焦線圈Dynamic focusing coil 動態(tài)聚焦線圈magnetic focusing coil [電子]磁聚焦線圈;磁聚焦線圈magnetic flux focusing coil 磁聚焦線圈magnetic field pulse focusing coil 磁聚焦線圈short coil magnetic focusing 短線圈磁聚焦short coil electromagnetic focusing 短線圈電磁聚焦 返回 focusing coil