(0.2134-0.2117)/0.2117*100=+0.803%(变化率)
(0.2134-0.2117)/0.2117/100*1000000=+80.30(PPM)
(0.2134-0.22)/0.22=-0003.77%
(0.2134-0.22)/0.22=-0003.00%
(-003.00-0003.77)/003.00*100=+0.803%(变化率)
(-003.00-0003.77)/003.00/100*1000000=+80.30(PPM)
(试验后-试验前)/试验前=+0.803%