n the fatty flesh of eel; an elongate fish found in fresh water in Europe and America; large eels are usually smoked or pickled
n voracious snakelike marine or freshwater fishes with smooth slimy usually scaleless skin and having a continuous vertical fin but no ventral fins
abbr. 电子能量损失谱学（Electron Energy Loss Spectroscopy）；电子发射器定位系统（Electronic Emitter Location System）