"impressively demonstrated" is a correct and usable phrase in written English.
You can use it to describe a particularly impressive action or performance. For example, "She impressively demonstrated her knowledge of the material in the presentation."
Yet for the most part the dancers are seen as individuals, sometimes in duets and trios that play with stillness, as impressively demonstrated in Mr. Hill's deeply focused performance.
The combination of light and sound is most impressively demonstrated when the system is activated.
This phenomenon has been impressively demonstrated in low-dimensional structures [6, 7].
The system has also, rather impressively, demonstrated real-time 3D image reconstruction.
Queiroz Junior et al. have impressively demonstrated the significance of the synergy between NMR hardware and innovative pulse sequences.
"By developing the purely electric two-seaters super sports cars, like the 'Concept One' or 'C Two', as well as core vehicle systems, Rimac has impressively demonstrated its credentials in the field of electromobility," said Lutz Meschke, deputy chairman of Porsche's executive board and member of its executive finance and IT board. .
The characteristics of all three devices impressively demonstrate how the Silicon-photomultiplier technology has improved over the past ten years.
The Belgian example impressively demonstrates that the EU-SILC ignores and excludes some of those people who are most affected by poverty.
The introductory example of the analysis of economic policy and its shortcomings during the Great Depression impressively demonstrates the immediate value of such ex-post evaluations.
The case of Cambridge Analytica impressively demonstrates the effective corollary of Big Data and Data Science.
'Every citizen can be a reporter.'" Indeed, as the Drudge Report so impressively demonstrates, even a low-tech site with little more than links to unverified stories and sensational headlines can indeed garner 1 billion viewers -- or at least can claim to do so.
