absolutely continuous spectrum的用法和样例：
- Explain why the bremsstrahlung radiation is a continuous spectrum?
- Experimental study of superbroadening continuous spectrum generation[J].
- A characterization of the NBUE(new better than used in expectation) class of life distributions with absolutely continuous distribution functions is introduced.
- To synoptic scale disturbance, the continuous spectrum of them is not overlapped, and there is only a critical layer to every wave.