Similar words: ergo, verge, serge, merge, clergy, merger, energy, allergy. Meaning: [ɜːg] 
n. a cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter.
n. a cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter. 
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31. Purposes: To study the variation regulation of amplitudes and mixed - light reaction electoretino - gram ( ERG ).
32. All-field electroretinogram (ERG) can only estimate the ruction of retina in total, at the same time, local-field ERG can only test a small region of retina every time.