5 ms·
X-ray, in some languages (like Polish) the abbreviation comes from https://en.wikipedia.org/wiki/Roentgen_(unit) https://en.wikipedia.org/wiki/Roentgen_(unit)
by digestives 10mo ago
X-ray, in some languages (like Polish) the abbreviation comes from https://en.wikipedia.org/wiki/Roentgen_(unit) https://en.wikipedia.org/wiki/Roentgen_(unit)