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  • G01H9/00
    		•  Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means HB CC 2G064
  • G01H9/00@A
    		•  Using of holography HB CC 2G064
  • G01H9/00@B
    		•  Measuring amounts of reflected or transmitted lights, or incident positions HB CC 2G064
  • G01H9/00@C
    		•  Using of Doppler effect, or optical interference or diffraction HB CC 2G064
  • G01H9/00@D
    		•  Using of photoelectric effect elements or crystals HB CC 2G064
  • G01H9/00@E
    		•  Using of changes in refraction indices such as that of optical fibres HB CC 2G064
  • G01H9/00@Z
    		•  Others HB CC 2G064
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