反射计

On the basis of the symmetry of response equation of a multi port reflectometer, the two complex constants of system are determined by using the same procedure.

自从六端口技术诞生以来〔2〕，各种校准方法层出不穷，任何一种校准方法都是针对多端口反射计响应方程而言的〔1〕。

The problems existing in the planning and construction of power optic cable monitoring system are emphatically researched, the experiences in the aspects of site selection for monitoring station, the planning of testing route and monitoring modes, and the selection of optical time domain reflectometer are summarized.

着重研究了在电力光缆监测系统规划、建设中存在的问题，总结了在监测站选址、测试路由规划、监测方式规划及光学时域反射计选型等方面的经验。

An improved method for measurement of complex permittivity using six-port reflectometer is presented. Error caused by incomplete superposition between the measured plane and reference plane, which is often in the case of conventional measuring method, is eliminated with the developed novel algorithm by separating the two planes.

提出了六端口反射计测量介质材料复介电常数的一种改进方法，新的算法使测量面与参考面分离，消除了传统测量方法中测量面与参考面无法完全重合引入的误差。

Low the time domain reflectometer that connects means to offer a tradition measure a function, give out to draft from mathematical upper mould rank jump answer or pulse is answered.

低通体例供给传统的时域反射计测量性能，并给出从数学上模拟的阶跃响应或脉冲响应。

Four-wavelength reflectometry can be used in human infants to estimate MP density.

使用4-波长反射计测量婴儿的黄斑色素密度值。

Acoustic reflectometry is a technique by which the dimensionsof a cavity can be estimated in the form of an area–distanceprofile.

用声学反射计的激素检查可以以面积－深度剖面的形式，评估一个空腔的三维特征。

The distributed optical fiber sensors based on optical time domain reflectometry are the easiest ones to become products in all these distributed optical fiber sensing technology.

而在众多分布式光纤传感技术中，基于光时域反射计的分布式光纤传感器是最容易实现工程化、产品化的技术。

The requirements of Interference fiber optical gyroscope, optical time domain reflectometer,biomedicine optical coherence tomograph.

讨论了在干涉型光纤陀螺仪、光时域反射计、医学相干检测技术、波分复用技术中对SLD的要求。

Each House Detective installation kit comes with three primary test instruments; a frequency agile signal level meter, a frequency agile radio frequency leakage detector, and a zero foot dead zone time-domain reflectometer; all three housed together in a durable hard case.

每家侦探安装套件具有三个主要的测试仪器，一个频率捷变信号电平表，一个频率捷变射频泄漏探测器和一个零脚死区时域反射计；所有三个关在同一个持久的疑难案件。

A new distributed fiber optic sensor for oil pipeline leakage detection based on OTDR was presented,which was fixed along oil pipeline and made use of characteristic of OTDR.

报道了一种基于光时域反射计的全分布式光纤漏油传感器，该传感器能实现分布式实时监测长输油管道，及时发现小型的漏油事件。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。