Methods Paraloliec type standard cured line was protracted using the data drawing list function in Excel based on the standard point(OD values, labelled). Stimutely the equation was displayed(Y= aX2 + bX+ c).

• 方法 应用Excel电子表格中的数据图表功能,根据标准点(OD值,标定值)绘制出抛物线型标准曲线,并显示相应方程式(Y=aX2+bX+c)。