本文对 "常平衡随动补偿的原理、调制射线束、选频放大的方法"进行了分析计算。结果表明，这种原理和方法能够克服诸如：环境温度、压力、温度的变化，电子元件老化，市电波动等因素对测量带来的不利影响。因而，采用此法可以制成各种高精度测量的放射性同位素及射线应用仪表。

A method

based on servo-compensation principle

for the modulation of nuclear rays or X-ray and frequency selective amplification has been analysed and evaluated. It turns out that the adoption of this method could result in the elimination of effects due to many unfavorable factors

such as: the environmental variation of temperatures pressure and humidity; the ageing of electronic devices; the fluctuation of power supply. Therefore

this method is very beneficial to the construction of various type

of high accuracy radioisotope instruments.