critical wavelength

例句：

1. 1.The scientists determined the critical wavelength of the laser beam.
   科学家们确定了激光束的临界波长。
2. 2.The experiment was designed to measure the critical wavelength of the material.
   实验旨在测量材料的临界波长。
3. 3. In optics, the critical wavelength is crucial for determining the transmission properties of a material.
   在光学中，临界波长对于确定材料的传播特性至关重要。