redundant instruction meaning in Chinese

冗余指令

In these methods , the efficiency of the first one is too low , because when the software written by advanced language based on pc is translated and edited , the redundant instruction is too much ; the second and the third one is too expensive and the algorithm is single . programmable dsp is introduced to implement image compression in this paper and the excellence is also presented
上述几种方法中，第1种方法最常用，但基于pc的高级语言所写的应用软件编译后指令冗余较多，工作效率不高；第2 、 3种方法具有很好的实时性和系统稳定性，但是目前采用的图像压缩芯片和嵌入式cpu的价格都比较贵，且压缩算法单一。