We have already mentioned the problems associated with insuring high frequency, low severity events and they certainly fall into the self-retention category.
我们已经提到过一些跟高频率低幅度的事件有关的风险，它们肯定归入自我保留一类。
2
This is a fall in the frequency of its light towards the red end of the spectrum.
这是由于光的频率下降并朝向光谱的红末端移动。
3
The analyses show that using a low equivalent series resistance (ESR) capacitor with a carefully determined value and raising switching frequency can decrease output voltage fall.