reflector n. 1.反射物,反射器;反光镜;【原子能】反射层;【天文学】反射望远镜。 2. (习惯、感情等的)反映(者)。 3.〔罕用语〕反省者,回想者,沉思者。 a reflector lamp 反光灯。 The newspaper is a true reflector of public opinion. 报纸是舆论的真实反映(者)。
Chapter 7 . the theoretical model of rayleigh optical frequency domain reflectometry is presented , and the fully distributed microbending loss optical fiber sensor on base of this model is studied 第七章,研究了rayleigh光频域背向散射理论模型,和基于该模型的全分布式光纤微弯损耗传感器系统。
Chapter 8 . the fully distributed optical fiber sensor system on base of raman and rayleigh optical frequency - domain reflectometry to measure microbend and temperature simultaneously is developed 第八章,研究了基于rayleigh光频域背向散射和raman光频域背向散射理论同时测量微弯和温度分布的全分布式光纤传感器系统。
In this dissertation , the thermodynamics equilibrium condition , modal and arithmetic to the fully distributed optical fiber sensor on base of raman and rayleigh optical back scattering reflectometry are studied 本文以分布式温度和光纤微弯损耗为对象以光频域rayleigh散射和raman散射为基础研究了全分布式光纤传感器的测试平衡条件、模型和算法。
In this paper , the calibration measures of time domain reflectometry ( tdr ) and neutron probe is discussed on basis of their theories and methods of measuring soil water content , and the processes of calibration experiments are described in detail 摘要探讨了时域反射仪和中子仪测定土壤含水量的原理,并在禹城试验站对各自适宜的标定方法进行了试验。
Time domain reflectometry ( tdk ) is a new measuring technique in the field of geotechnical engineering , which has attracted more and more attention for its convenient , economical , digital and remote control properties Timedomainreflectometry (时域反射法, tdr )是一种新型的滑坡监测技术,具有方便,安全,经济,数字化及远程控制等优点,使滑坡监测效率得到较大的提高。
In the first place , start with theoretic model of distributed fbg strain - sensing network , sensing principle of fiber bragg grating is analyzed and sensing model created . on the basis of analyzing advantages and disadvantages of several familiar multiplexing and demodulation techniques , a mixture multiplexing method that combines optical frequency domain reflectometry ( ofdr ) and wavelength division multiplexing ( wdm ) is proposed to address fbg sensing array . at the same time , tunable narrow - band light source , which is composed of wide - band light source and tunable optical filter , is adopted to demodulate multiplex signals 首先,论文从分布式光纤光栅应变传感网络的理论模型入手,分析了光纤布拉格光栅的传感机理,建立光纤光栅应变传感模型;在分析比较了常见几种复用技术和信号解调技术的优缺点基础上,提出应用光频域反射复用技术和波分复用技术相结合的混合复用方法来解决光纤光栅应变传感网络的寻址问题,采用由宽带光源和可调谐光滤波器组成的可调谐窄带光源来解调复用信号,通过理论分析和实验研究证实了系统方案的可行性。
We use time domain reflectometry ( tdr ) to simultaneously estimate volumetric soil water content , soil solution electrical conductivity , and soil nitrate concentrations in combination with porous ceramic cup solution samplers to follow no3 - n transport in soil exposed to different irrigation , fertilizer quota and temperature . the experiment was conducted with nondestructive soil colums 本研究中以原状土为研究对象,利用时域反射技术随时测定土壤含水量和电导率的特点结合多孔陶瓷杯抽滤技术,研究在不同灌水、施肥和温度下硝态氮的变化。
The fully distributed optical fiber sensor system is studied by theory and emulational methods . the contents are organized as follows : chapter 1 . an over view of the research background is introduced , and the advantages of the fully distributed optical fiber sensor on base of the ofdr ( optical frequency domain backscattering reflectometry ) are presented 本文从理论分析和数据仿真两个方面研究了全分布式光纤传感器系统,主要内容安排如下:第一章,介绍了本文的研究背景和全分布式光纤传感器的当前进展,指出了基于光频域散射的全分布式光纤传感器的优点。