error band meaning in English

误差带
误差范围
误差区域

In this paper the main work includes the analysis of the rotation of special angles , the range of rotation angles in cordic algorithm ; analysis on what condition should be fulfilled to reach any target angle ; analysis and simulation on error band and output spectrum ; imple - mentation of the architecture on fpga device
我所做的只是很小一部分,主要包括对cordic算法中特殊角的旋转和旋转角度范围;在何种条件下可以达到任意角度的分析;对许多问题比如误差上限和输出频谱的计算机仿真;这种结构在fpga器件上的实现。