The phrase "achieving a relatively" is correct and usable in written English.
It can be used when discussing the attainment of a certain level or degree of something in comparison to other standards or benchmarks.
Example: "The team is focused on achieving a relatively high level of customer satisfaction this quarter."
Alternatives: "reaching a somewhat" or "attaining a comparatively".
His piano sound tends to the percussive, achieving a relatively thin but tactile plangency.
Achieving a relatively even contribution by broodstock to subsequent generations is necessary and for many aquaculture species this is possible to control through mate pairing.
Mediation tends to be less expensive than litigation, and it usually moves much faster, thus reducing legal fees and other costs in addition to achieving a relatively swift resolution.
Though tremendous progress has been achieved over the last few decades, the safety of these molecules still remains a matter of concern and a careful design is required for achieving a relatively safe toxicity profile along with therapeutic effectiveness.
The key challenge to making such a system efficient is achieving a relatively high temperature.
After this earthquake, it abruptly increased, achieving a relatively high value of 31.1%.
The administration of the kingdom sporadically achieved a relatively high degree of centralization, although centrifugal tendencies regularly appeared.
Now it is estimated that only one in five Americans achieves a relatively high level of physical activity at work.
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.
