查询词典 power distribution system

Based on the characteristics of the DC traction power system in rail transit, a numerical model is set up to calculate the leakage current and the potential variation distribution.

摘要针对城市轨道交通直流供电系统特点建立了杂散电流的计算模型并进行了仿真。

High Voltage Transmission and Distribution, City Power Supply, Line Tower, Transformer Shell, High Voltage Switchboard and link system.

高压输配电、城市供电、线路的铁塔、变压器罩壳，高压开关柜及连接系统。

Key words: electric power system and automation; unified modeling language; CASE tool; Geodatabase; distribution network

关键 词：电力系统及其自动化；统一建模语言；CASE工具；空间数据库；配电网

The Two Way Automatic Communication System is implemented by modulating the power voltage at preselected zero of the voltage waveform of the distribution network.

双向工频电力通信的基本原理是利用工频电压基波波形过零信息实现信号的调制和解调。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。