English to Chinese Tech/Engineering Chemistry; Chem Sci/Eng HPLC

Polar compounds present a unique and difficult challenge since these unretained and/or poorly separated analytes must be re-analyzed separately, thus becoming a bottleneck in the high-throughout laboratory. If some analyte separation is realized, the peak fraction is a highly aqueous, non-volatile solvent (i.e., very weak mobile phase) that requires long evaporation times.
在大陆在色谱中FRACTION称为“流分”，在台湾等地称为“分划”。PEAK FRACTION 为“峰分划”吗？我怎么看也别扭。：-）