The phrase "a certain time lag" is correct and usable in written English.
It can be used when discussing delays or intervals in processes, events, or reactions.
Example: "The experiment showed that there was a certain time lag between the stimulus and the response of the subjects."
Alternatives: "a specific delay" or "an identifiable time delay".
Miles said: "Economic history teaches us that a combination of tax cuts, running large fiscal deficits, substantial cuts in interest rates and more quantitative easing is likely, with a certain time lag, to have a substantial impact on demand in the economy and it may well be that the worst of the recession may well be behind us.
In fact, the investment demand is affected by interest and the price and has a certain time lag.
Commencement of the first decay phase could be caused by ethylene treatment after harvest, and the second one spontaneously triggered after a certain time lag.
After a certain time lag, the scattering peak appeared and its intensity increased with cure time, suggesting the development of reaction-induced spinodal decomposition.
As an example (Fig. 3), we anticipate that if antiretrovirals are newly introduced into a population, HIV numbers will decrease and in consequence, with a certain time lag, TB numbers will also decrease.
This supports the possible etiology of retinal bleeding after a hypoxic insult to the retinal vessels at high altitudes, which may cause a wall rupture after a certain time lag.
While a certain time-lag was necessary for a microRNA's regulatory effects to propagate fully to the secondary targets [ 40], it is likely that, at a higher-level and a larger scale, genes' differential expression phenomena may lag behind their differential co-expression circumstances by a time-phase that corresponds to one or more disease stages.
In summary, we analyzed the notification data of scarlet fever and investigated spatiotemporal spreading patterns of the disease with certain time lags in Hong Kong, Macau, and Guangdong.
Additionally, potential delays in parents becoming aware of clinical symptoms of the disease in their children [ 15] and the time-consuming process of patients seeking hospital treatment [ 32] affect the disease with certain time lags.
Considering the various influences on infectious disease using different temporal and spatial scales [ 14], such as the viral incubation period and the potential delay in parental awareness of clinical disease symptoms in children [ 15], factors that affect disease have certain time lags.
These models estimated respiratory syndrome levels at a certain time with, as explanatory variables, the lagged (range of –5 to +5 weeks) pathogen counts as explanatory variables.
