直流系统环网是接地故障检测中的一个关键因素。
Loop net of DC system is an important factor in the grounding fault detection.
剖析绿地系统规划中存在的问题和矛盾，提出城市绿地系统应该采用环网式的布局结构，使城市生态系统达到相对的稳定，使新建绿地与原有绿地能很好地衔接起来。
In order to analyze the problems and contradictions of green space system planning in Changchun, I suggest the urban green space system should adopt the layout structure of ring and radial.
目前广泛使用的低频信号检测法容易受到直流系统支路中存在的对地分布电容和环网的影响。
The detection method of low frequency signal injection, which is widely used, is easily influenced by the capacitors between ground and each branch and by the ring net.
分析了电力系统电磁环网运行存在的问题，电磁环网运行必须具备的条件。
The problems and the conditions of electromagnetic loop network operation in Hunan Power System are analyzed.
该系统能适应弱环网等复杂的配网运行方式，并能快速准确地计算出低压配网中每条馈线的功率损耗情况，为低压配网线损的分析与管理提供可靠的基础。
It can calculate the power losses of each feeder rapidly and correctly and provide reliable foundation for the analysis and management of the power losses in low voltage distribution network.
通过对当前工业控制系统的研究，结合工业控制现场的实际情况，设计了具有双冗余环结构的现场以太网结构，能够在较短时间内完成故障探测和修复。
Through the study of current industrial control system and the actual status of industrial control field, design an Ethernet structure used in industrial field with double redundancy ring.
针对直流系统中环网对接地故障检测的影响，提出利用分形的思想，初探性研究分形对环网故障的识别。
According to the influence of loop net on DC system fault detection, this paper presents a new idea based on Fractal theory to study how Fractal can identify the loop net fault.
环网的瞬交流动计算问题较为复杂，需要求解高阶非线性方程组，对于复杂的网状结构，系统的自动识别或标记相当麻烦。
The calculation of the system is complex, because of solving high haw equation group. It is also a trouble to sign and identify for the equation group.
环网的瞬交流动计算问题较为复杂，需要求解高阶非线性方程组，对于复杂的网状结构，系统的自动识别或标记相当麻烦。
The calculation of the system is complex, because of solving high haw equation group. It is also a trouble to sign and identify for the equation group.
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