wavelength calibration

例句：

1. 1. The spectrometer is used for wavelength measurement.
   分光计用于波长测量。
2. 2. The new sensor can measure the wavelength of light accurately.
   新传感器能准确测量光的波长。
3. 3. The experiment requires precise wavelength measurement.
   实验需要精确的波长测量。