钨带灯|沙特标准|SASO-OIML-R48

  钨带灯|沙特标准|SASO-OIML-R48
  
  SASO-OIML-R48
  
  Tungsten ribbon lamps for the calibration of radiation thermometers
  
  辐射温度计校准用钨带灯
  

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