The phrase "attained previously" is correct and usable in written English.
It can be used to refer to something that was achieved or reached at an earlier time.
Example: "The results of the experiment were consistent with the data that had been attained previously."
Alternatives: "achieved earlier" or "obtained before".
From water contact angle measurement results, the exposure time was clearly demonstrated to be shortened down to 300 s with our innovated apparatus from 1200 s attained previously.
An instantiation of the framework is presented, and several numerical tests focused on geometric design and isogeometric analysis demonstrate the versatility of the developed framework, and show significantly higher convergence rates than attained previously in the considered setting.
The texture of his score has a richness of instrumental and harmonic colour, a depth of orchestral and choral writing such as he never attained previously, and the music shows much alert awareness of the technical resources acquired by other creative musicians during the last few years of his life.
Such magnified images are providing new insights into cellular and microcirculatory properties at a level of detail not attained previously.
The equilibrium point is said asymptotically stable if the system returns to the equilibrium point attained previously.
The moderate inter-examiner reliability achieved by the novices in this study coincided with the acceptable-to-good reliability (0.4 0.61) attained previously by Peterson [ 3].
Queue processing was considerably improved in the current implementation by changing from a linear event queue to a system of partially ordered queues, which allowed us to attain previously observed levels of performance [ 1].
And Capital Gate in Abu Dhabi – a 160-metre tower that apparently is "signature" and "iconic" and "avant-garde"; a boot-shaped splurge of steel and glass, which, thanks to its 18-degree inclination, has attained a previously unthought-of superlative: it has been officially recognised as the furthest-leaning tower in the world.
When, the equalities in (1.6) concerned with and are also attained for previously defined values.
On the other side observed coagulation ratios in included studies with veno-venous ECMO were inferior to those attained in previously reported veno-arterial ECMO patients (mean = 1.45 vs 1.64) [12]; however, no association between coagulation ratio and increased bleeding rates could be observed in our results with veno-venous ECMO patients.
The ship did not make it to the Pole so Nansen and a crewmate ventured towards it on foot and attained the previously-unheard of latitude of 86 degrees North, where massive ridges of ice blocked their path.
