To ensure normal operation of the substation, the DC system grounding fault should be detected as quickly as possible.
为保证直流系统的正常运行，查找直流接地故障的时间应尽可能缩短。
The research of keeping the steady operation of motors under various states of start, normal operation, over load for positionless sensor brushless DC motor is analyzed here.
文章就无位置传感器无刷直流电机的起动、正常工作、过载等状态下如何保持电机稳定运行进行了分析。
Part I Culture ex vivo and identify of dendritic cell (DC) Objective to investigate dendritic cells of peripheral blood of patient with hepatocellular carcinoma compared with that of normal donor.
第一部分树突状细胞(DC)的体外培养与鉴定目的：探讨肝癌病人外周血树突状细胞与正常人外周血树突状细胞之间的差异。
The state of DC motor used in the drive system is directly related to normal production. Therefore it is very significant to popularize on-line monitoring and diagnosis of DC motors.
使用中的直流电动机工作状态直接影响生产是否正常进行，因此对其进行在线监测与故障诊断具有重要意义。
The normal operation of DC system is of great significance to the safety and stability of substation.
直流系统正常对于变电站安全稳定运行意义重大。
A new method of monitoring real-timely for DC system insulation using double asymmetrical Bridges in normal mode is adopted in this paper, and the shortcomings of symmetrical bridge are overcome.
本文采用了一种常态下利用双不对称电桥实时监测直流系统绝缘的方法，解决了上述问题。目前广泛使用的低频信号注入法容易受到直流系统支路中存在的对地分布电容的影响。
It can provide all kinds of ac, dc power, and is convenient for the test to check switch equipment is normal or not, improve work efficiency.
它能提供各种交、直流电源，便于对开关柜的检测，以检查设备正常与否，提高工作效率。
This paper presents a reversible DC speed regulation system that has great difference in constructions with the normal ones.
本文讨论的晶闸管的错位无环流可逆直流调速系统，与常规的结构大不相同。
Normal mode noise is detected as a peak noise or deviation in a DC signal.
如图1 - 5所示，串模噪声是叠加到希望的输入信号上的误差信号。
Normal mode noise is detected as a peak noise or deviation in a DC signal.
如图1 - 5所示，串模噪声是叠加到希望的输入信号上的误差信号。
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