北京光学仪器厂从日本托普康(Topkon)公司引进电子经纬仪技术最近正式签约,这是该厂继一九八四年从瑞典引进测距仪生产技术后的又一重大技术引进项目。它采取技贸结合的方式,引进托普康公司DT—05A、EFL-1电子经纬仪组装整机后,与 Beijing Optical Instrument Factory has recently signed an electronic theodolite technology from Japan’s Topkon Corporation. This is another major technology introduction project of the factory following the introduction of rangefinder production technology from Sweden in 1984. It adopts a combination of technology and trade. After the introduction of Topcon DT-05A and EFL-1 electronic theodolites,