The phrase "a certain frequency of" is correct and usable in written English.
It can be used when discussing the occurrence or rate of an event or phenomenon within a specific context.
Example: "The study revealed a certain frequency of errors in the data collection process that needed to be addressed."
Alternatives: "a specific rate of" or "a particular occurrence of".
In fact, at this threshold level, he will not see every flash presented, even though the intensity of the light is kept constant; for this reason, a certain frequency of seeing e.g., four times out of six must be selected as the arbitrary point at which to fix the threshold.
Moreover, we demonstrate that the trapped position of a certain frequency of the terahertz waves can be moved continuously along the grooves in subwavelength scale by ingenious control of the distributions of the refractive indices of silicon filled in the grooves.
The polarization decreases with increasing frequency and reaches a constant value due to the fact that beyond a certain frequency of external field, the electron exchange Fe3+ ⇔ Fe2+ cannot follow the changes in the applied field.
Tune into a certain frequency of social media, and the above taken from the words of those who lived through it is viewed as suspect at best, at worst as fabrication.
Each metastasis step implies different capacities and programs and a certain frequency of failures.
Rather, each gene has an abundance of close but different TSSs with each unique starting site having a certain frequency of transcription initiation.
The MIT researchers built an experimental graphene chip known as a frequency multiplier, meaning it is capable of taking an incoming electrical signal of a certain frequency — for example, the clock speed that determines how fast a computer chip can carry out its computations — and producing an output signal that is a multiple of that frequency.
Photonic crystals are periodic dielectric structures that have a band gap that forbids propagation of a certain frequency range of light.
The bandgap property can forbid propagation of a certain frequency range of SWs into MCs.
The IMF is not a single-component signal but contains a certain frequency band of the noised SMR t) (Figure 1) because of the interpolation error and end effect.
The chaotic motion in a certain frequency band of such a MEMS device is investigated, and the corresponding equilibrium, natural frequency and responses are determined.
