dark field line

• 暗场线

dark field line的用法和样例：

例句

1. The finite bandwidths of the driving and the probe field decrease the gain and change the value of the index of refraction, especially of the driving field.
   激发场线宽破坏了原子的相干性，使介质的增益下降并改变了折射率的大小，探测场的线宽使介质的探测增益谱及折射率谱的分辨率下降。