The phrase "achieves a relatively" is correct and usable in written English.
It can be used when discussing the degree or extent to which something is accomplished in comparison to other things.
Example: "The new software achieves a relatively higher level of efficiency than its predecessor."
Alternatives: "attains a somewhat" or "reaches a comparatively".
Now it is estimated that only one in five Americans achieves a relatively high level of physical activity at work.
The experiments display that the robot achieves a relatively constant force control effect by the active and passive compliance force control.
The copolymer achieves a relatively low bandgap (1.6 eV) by its internal charge-transfer, which concurs with the results of density functional theory (DFT) calculation for the distribution of HOMO and LUMO levels.
Cyclic steam stimulation (CSS) is an effective method to recover extra heavy oil but it achieves a relatively low recovery factor (~26% before economic limit is reached) and is less energy efficient with higher emissions intensity than that of conventional oil production.
For a magnetic field change of 5 T, the isothermal magnetic entropy change (-ΔSm) for the longitudinal direction reaches as large as 10.33 J kg−1K−1, besides the refrigerant capacity (RC) achieves a relatively large value of 748.22 J kg−1.
EWGA achieves a relatively high accuracy of 91.7% using SVM classifier.
The administration of the kingdom sporadically achieved a relatively high degree of centralization, although centrifugal tendencies regularly appeared.
U.S. Marines achieved a relatively quick victory, even as McChrystal planned a more ambitious offensive in Kandahar.
I approach them, in essence, as something between a good fairy and a laptop, and generally we achieve a relatively seamless shopping experience together.
A Rube Goldberg machine, of course, is any extremely inefficient contraption that uses an excessive number of moving parts to achieve a relatively trivial end.
