Kjeldahl means by measuring the nitrogen content and the use of nitrogen and protein conversion factor to calculate the total amount of protein contained in dairy products. 凯氏定氮法，是指通过测量氮元素的含量，并利用氮元素与蛋白质换算系数，来计算乳制品中所含蛋白质总量的方法。
Because of the high spinning rate, a small fluctuation in the scale factor of the gyros will cause marked errors in the spinning angle, which invalids the measurement. 因为火箭弹的自旋角速度较高，所以陀螺标度因子的微小变化将引起自旋角度很大的测量误差，使测量结果失去意义。
