So, for example, we were talking about a thresholdfrequency as in a minimum frequency of light that you need in order to eject an electron from a metal surface.
举个例子来说，我们谈论的临界频率是，光从金属表面逐出一个电子，所需的最小频率。
2
Identifiers-a highly unique set of distinct values with low frequency per value based on set threshold.
标识符(Identifier)—一组高度惟一的不同值，基于设置的阈值，每个值具有较低的频率。
3
Most studies could not quantify disease frequency in the general population as they are hospital-based and confounded by variations in threshold and the rate of hospitalization.