经分析找出了产生电压偏移的主要原因，并针对这些原因提出了改善措施。
By means of the analysis was the main Cause of the voltage deviation found out. Finally this paper presents the improvement measures.
对引起交换机非正常拆线、用户非正常挂机的伪信今的产生原因作了初步分析，并针对这些原因提出了改进的措施；
This paper analyzes the cause of false signallings that result in abnormal ex-change disconnection, abnormal user off - hook, some ways against them is showed.
分析了高速走丝线切割加工中影响加工精度与表面质量的主要因素，并针对这些原因分别给出各自有效的预防及处理方法。
The main factors that affect the machining precision and surface quality in high-speed wire cutting are analyzed. And the corresponding effective precautionary measures and handling methods are given.
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