The phrase "the certain differences" is correct and usable in written English.
You can use it when talking about a particular set of differences, as in the example sentence: "I noticed the certain differences in the way customers treated me when I changed my hairstyle."
A frictional parameter A (=aσ) controls the variation of V with respect to the certain difference of stress and strength, where parameter a (and b, as will be described below) is a frictional coefficient, and σ is the effective normal stress.
Those results confirmed the existence of certain differences in the susceptibility to NDV among duck breeds.
For example, as the author discusses, certain differences exist such as the modern use of cars, which clearly affect present-day mobility patterns and access to resources.
The analyses of the lateral configurations of the specimens were more uniformly distributed, and in spite of the fact that certain differences were observed they were not statistically significant by the Hotelling's t-test of discriminate function.
Locomotor activity levels and the time spent in each area of the T-maze revealed certain differences between the age groups.
The novel Markov scheme PAPR estimation is analogous to the MM-LINC mode with certain differences such as the pdf in the case of the balanced mode and the probabilities of each mode, which are now those in (12).
Moreover, although there was no significant difference in food intake, the weight gain showed certain differences between the HFD group and HOX-7 groups.
Although clear anticancer effects have been observed for all statins, the existing data suggest certain differences in the antitumor effects of individual statins (Gbelcova et al, 2008).
In addition to the findings on the collective level we found certain differences in the pattern of conceptions according to profession and gender.
In some cases, an affair will put the spotlight on certain differences that are irreconcilable.
