Problem Explanation：
Compared with the DC fat measurement method used by general scale, Mi Body Composition Scales adopts the method of AC fat measurement. Mi Body Composition Scales uses the alternating current of higher frequency for fat measurement.DC is generally low in frequency and can only bypass cells, mainly through extracellular fluid for measurement, while AC with higher frequency can partially pass through the cell membrane and flow through intracellular fluid for measurement, so the measurement results will be more accurate, but the measurement speed will be slightly slower than DC lipid measurement.