The fact that the research of analog system testing and diagnosis has been going slowly is mainly due to the theoretical and technical immaturity as well as an insufficiency of applicable research results 模擬系統(tǒng)的測試與診斷研究進展一直較緩慢,主要原因是理論上和方法上均未完全成熟,可付諸實用的研究成果還比較少。