电磁波测距仪 [测] electromagnetic distance measuring instrument ; EDM instrument ; electromagneticdistancemeter ; EDMI

短距离电磁波测距仪 short-range electronic distance meter

电磁波恻距仪 electromagnetic distance measuring instrument

电磁波测距标称精度 nominal accuracy of EDM

电池波测距 EDM

无线电声波测距法 radio acoustic ranging

无线电测距波束 radio-range beam

无线电声波测距仪 radio-acoustic range finding equipment

视距电波传播 line-of-sight radio wave propagation