the Xixiayuan anti-regulating reservoir dam foundation project and the first stage anti-seepage project of Maanshan section of the Yangtze River,were detected by use of several effective non-destructive testing methods,including the geological radar,ultrasonic television,video television,and high-density elastic wave CT.
利用地质雷达、超声电视、视频电视和高密度弹性波CT等几种无损检测技术,对两个国家重点水利工程(西霞院反调节水库坝基和长江马鞍山河段一期防渗工程)的防渗墙进行了检测,通过对检测成果的分析,总结出每种无损检测技术在检测防渗墙中的优点及局限性:地质雷达检测防渗墙对内部缺陷情况可以进行定性解译,但定量测量不能满足要求;井下电视系统优点是通过超声波成像、视频成像,成果形象、直观可靠,但需要造孔;高密度弹性波CT检测防渗墙质量可反映墙体介质分布的均匀性,但目前软件只能满足一般性数据处理;超声波速CT成像技术能在不同深度位置将不同声速用不同颜色显示出来,成果一目了然,但图像颜色比较单一,相邻声速范围呈现的色彩区分较困难。
Reasons for and Methods to Solve Interference of Video Cable Transmission;
视频电缆传输中的干扰原因及解决措施
paired high and low frequency telecommunication cable
对称型高低频电信电缆
A video distribution system that uses coaxial cable and optical fiber to deliver multichannel service to households within a geographically defined franchise area.
一种影像传送系统.它根据协议,使用同轴电缆和光纤电缆向家庭传输多频道电视节目.
Generic specification for radio-frequency cables
GB/T12269-1990射频电缆总规范
PVC insulated radio frequency cable
聚氯乙烯绝缘射频电缆
polythene coaxial RF cable
聚乙烯同轴射频电缆
Verify that the audio cable is ok
检查音频电缆是否正常
Cable News Network, CNN
电缆电视新闻广播网
B: You can buy channels on cable TV. Each offers something special, like sports or music or movies.
乙：您可以买电缆电视的频道，每一个频道都放映一种专门的节目，如体育、音乐、电影等。
Choice and installation of shipboard telecommunication cables and radio frequency cables
GB/T13029.3-1991船用通信电缆和射频电缆的选择和敷设
remote camera cable video system
远程摄像光缆电视系统
Test method of capacitance stability for radio-frequency cables
GB/T4098.5-1983射频电缆电容稳定性试验方法
Test method of corona for radio-frequency cables
GB/T4098.1-1983射频电缆电晕试验方法
Method of test for breakdown voltage of cable paper at power frequence
GB/T3333-1982电缆纸工频击穿电压试验方法
Study on Magnetic Field at Power Frequency for 220kV and 110kV Underground Power Cable
220kV及110kV地下电力电缆工频磁场研究
Power Frequency Breakdown Characteristics of Water-tree Retardant XLPE Power Cable
抗水树XLPE电力电缆的工频击穿特性
Discussion on the Shield Power Cable’s Ultra Low Frequency Test Method
浅谈屏蔽电力电缆的超低频测试方法
The Influences of Variable Frequency Supply on Cable Insulation Property
变频供电对电缆绝缘性能影响的研究