航空微波测距仪是测定二等补充网的有效仪器, 但不能用于一等控制网测量.Aerodist is a useful equipment for secondary breakdown , but not for primary control.半导体激光测距仪主要由激光发射光源 、 接收系统和光学天线组成.Laser rangefinder consists of laser emission source, receiving syste...
陀螺仪用于船舶 、 飞机和宇宙飞船中的导航设备.Gyroscopes are used in navigational instruments for ships, aircraft, and spacecraft.借环形激光陀螺仪的技术,加以改进使之适用于流体流量的测量.Techniques borrowed from the ring laser gyro can be adapted to fluid flow measureme...