12.5%换算成百万分之一是多少?(ppm)
12。5 % = 12。5 / 100百万份之x = x / 1,000,000 = x ppm。。。。(分母是1,000,000 )/一百万 12。5 %= (12。5 X 10000)(/ ( 100 X 10000 ) ppm = 125,000 ppm。
12。5 % = 12。5 / 100百万份之x = x / 1,000,000 = x ppm。。。。(分母是1,000,000 )/一百万 12。5 %= (12。5 X 10000)(/ ( 100 X 10000 ) ppm = 125,000 ppm。收起