The principle of OTDR (Optical Time Domain Reflectometry) for faults location and application of OTDR method is discussed.
探讨了OTDR（光时域反射计）故障定位的原理，说明了OTDR的使用方法。
According to the principles of time domain reflectometry, a new kind of sensor of soil water content measurement is explored.
根据时域反射技术原理，研制了测量土壤含水率的一种新型传感器。
According to the case of monitoring landslide, brings up the field method about the use of Time Domain Reflectometry (TDR) for monitoring landslide.
依据时间域反射测试技术(TDR)的基本原理，提出了TDR技术在滑坡监测中的野外工作方法。
A new method with Optical Time Domain Reflectometry Technique for detecting PMD allows network operators to maximize the reuse of existing physical plant.
本文介绍一种基于光时域反射技术的PMD测试新方法，可以保证网络运营商最大程度使用现有通信网络。
The soil moisture is measured in the field by time domain reflectometry , neutron probe and soil sampling, The results showed that the measured values are different.
应用时域反射仪、中子仪和上钻法测定了农田土壤水分，并对农田土层含水量和主体贮水量的测定结果进行了比较。
Based on optical Time Domain Reflectometry, detecting disengaging at interface of steel tube-confined concrete (STCC) with distributed optical fibers was investigated.
基于光时域反射技术，进行了分布式传感光纤检测拱桥钢管混凝土交界面脱空的研究。
In situ monitoring of soil water content changes in sloping fields under different use types were carried out in a highland region of southern China using time domain reflectometry (TDR).
应用时域反射仪(TDR)土壤水分定位监测方法，研究了南方丘陵区不同坡地利用方式土壤水分动态及其影响因子。
Detect and measure impedance Mismatches Robert demystifies the topic of time domain reflectometry, which enables you to detect, measure, and locate any impedance mismatch in a transmission line.
Robert使得时域反射仪这一课题不再神秘，它能够帮助您检测，测量以及找出任何阻抗不匹配的输电线路。
On the basis of electromagnetic theory and time domain reflectometry (TDR) method, the effects of TDR sensor type, material and size on the accuracy of the measurement are systematically analyzed.
从电磁学理论及时域反射测量(tdr)法出发，系统分析tdr传感器类型、材料及尺寸对测试精度的影响。
The ultrasonic time-domain reflectometry(UTDR) technique is most useful for the in situ monitoring of fouling under realistic operating conditions.
超声时域反射法在实际操作条件下在线监测膜污染显示出独特的作用。
This paper presents the principles of the Raman back-scattering effect based temperature sensing and the OTDR (Optical Time-Domain Reflectometry) based positioning.
本文介绍了光纤拉曼散射测温基本原理和基于光时域反射(OTDR)定位原理。
Time-domain reflectometry( TDR): An impulse is transmitted into the loop.
时域反射器（DR）一个脉冲发射给环路。
Time-domain reflectometry( TDR): An impulse is transmitted into the loop.
时域反射器（DR）一个脉冲发射给环路。
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