double-centre theodolite的意思|示意

美 / / 英 / /

double-centre经纬仪

复测经纬仪复测经纬仪 double-centre theodolite; repeating theodolite; repetition theodolite 复测流速仪 repeating current meter; repeating current metre .

双中心经纬仪 ... direction theodolite 方向经纬仪 distance-measuring theodolite 测距经纬仪 double-centre theodolite 双中心经纬仪,复测经纬仪 ...