fixed set座机fixedadj.固定的；不变的；确定的动词fix的过去式和过去分词.Fixed Income and Real Estate不变收入证券与房地产金融fixed neutral density filter固定中密度滤光器fixed bed reaction equipment固定床反应设备fixed array multilaser radar固定阵列多元激光雷达fixed-point number weights定点数权值fixed frequency radar beacon固定频率雷达信标Fixed point theorem in cones最优正解fixed-line phone customers固网电话用户fixed-range mark generator固定距离标记发生器fixed channel reconnaissance固定波道侦察