1.
Underground transmission is more expensive than the overhead alternative.
地下输电要比架空线输电成本高
2.
Because of the longer repair time for underground transmission systems, expensive duplication facilities are sometimes installed to reduce the risk of overlap-ping outages4.
由于地下输电系统的修理时间较长,因此有时就安装双套重复设施以降低重叠停电的危险。
3.
Seismic response analysis for long-span transmission towers under multiple support excitations
多点输入下大跨输电塔结构地震反应分析研究现状
4.
This has prompted system designers to consider underground AC or DC transmission by cable.
这就促使电力系统设计者考虑采用电缆由地下交流或直流输电。
5.
input current at positive-going threshold voltage
正向阈电压下输入电流
6.
input current at negative-going threshold voltage
负向阈电压下输入电流
7.
JEDEC ? The input threshold voltage when the input voltage is falling.
在输入电压下降时的输入门限电压。
8.
Propagation of EM waves in railway′s tunnels with a braided coaxial cable;
轴向漏泄电缆在地下隧道中电磁波传输特性研究
9.
An Analysis to the Electrochemical Procedure for the Impressed-current Cathode Protection of Long-distance Underground Pipelines;
地下长输管道外加电流阴极保护的电化学过程分析
10.
Research on Transmission Line Fault Location in Non-Direct Grounded Neutral System Under the Condition of Defect Data
缺陷数据条件下小电流接地系统输电线路故障测距的研究
11.
cascode video output
射地-基地视频输出电路
12.
With some methods, current is introduced into the earth by grounded lengths of wire.
有些方法是用各种长度的接地线将电流输到地下的。
13.
A major difficulty of underground AC transmission lines results from a continuous flow of ″charging current″ between the conductor and the sheath.
地下交流输电线路的一个主要难题由电缆导线与电缆外皮间持续流动的“充电电流”所引起。
14.
Invite others by entering their e-mail addresses below.
您可以通过在下面输入对方的电子邮件地址来邀请来宾。
15.
Please enter your name, company name, country and e-mail information below.
请在下面输入您的姓名、公司名、国家(地区)和电子邮件信息。
16.
Research on the line faults and its protection of HVDC transmission system in metallic return operation
直流输电系统单极金属回线运行方式下线路接地故障及保护研究
17.
Construction of Glass-Magnesium Composite Vent-Duct in 500kv Underground Power Transmission and Transformation Project
玻镁复合风管在500kV地下输变电工程中的施工技术
18.
Research on DC Power Supply of Wide Range Input Voltage for Underground Work
适合地下工作的宽范围输入直流稳压电源的研制