1. The theoretical problems of the position feedback galvanometric recording system are systematically considered in this paper.

2. Instruments requiring the testing of Resolvers, Synchros, Galvanometric Movements and Lighting Circuits can be fully tested for operational performance in the Airborne Electrical Environment.

3. Capstan imagesetter of laser sources stay, the exposure light rotation by galvanometric or Prism ? ? s.

4. At present, three kinds of seismographs are used at Chinese seismic stations. They are the direct-coupled seismometer, the galvanometric seismograph, and the electronic seismograph.

5. Capstan imagesetter of laser sources stay, the exposure light deflection rotation by galvanometric or Prism ? ? s.