wavelengh

例句：

1. 1. The scientistmeasured the wavelength of the light beam.
   科学家测量了光束的波长。
2. 2. The physicist discovered a new way to calculatethe wavelength of light.
   物理学家发现了一种新的计算光波长的方法。
3. 3. The engineer used a laser tomeasure the wavelength of the spectrum.
   工程师使用激光器来测量光谱的波长。