The phrase "accompanied either" is not correct and does not convey a clear meaning in written English.
It may be intended to express a choice or alternative, but it lacks the necessary context or structure to be usable.
Example: "The event will be accompanied either by music or by a guest speaker."
Alternatives: "accompanied by either" or "joined by either".
Depending on the potential and electrolyte used the redox reaction of ruthenium oxide is accompanied either by mass loss or by mass gain.
Each fascinating place only gives her a greater appetite to see the next ancient and hard-to-reach location, accompanied either by my geologist stepfather or her great friend Annette.
They said he was not telling the public that most experts believe a plan like his to put some Social Security payroll taxes into individual investment accounts would have to be accompanied either by cuts in the guaranteed benefit or huge infusions of new money into the program.
But for the public — at least for children and their parents — the more embattled frontier is the one between PG-13 and R. In actual ticket-buying practice, the difference between them is that a young-looking adolescent must be accompanied either by a full-fledged adult or by an older-looking adolescent.
The left-shift of steady-state inactivation was accompanied either by an unchanged steady-state activation (P1298L, R1632H) or by a left-shift of steady-state activation (−15.0 mV for L212P, −6.8 mV for DelF1617; Table 1, Fig. 2B).
In different studies, IR was accompanied either by low or high insulin levels.
These are not scenes that accompany either Brown or Cameron.
The present study was designed to study short-term responses accompanying either chronic or acute fasting-refeeding cycles.
We argue that the experiments of the upstream oil industry to develop a suitable organizational design for such innovation intermediaries suggest that a moderate level of stratification accompanying either close or open membership is the most suitable design.
In this case, most experts judged that widespread ground deformation would accompany either intrusion or magmatic unrest.
The quartet got a chance to show itself off with seven short pieces by Jóhannsson to begin the evening, the composer accompanying either on laptop or piano.
