无源系统

The results show that ISOCS measurement method by efficiency calibration without a radioactive source is a convenient and reliable method for environment samples.

为了确保ISOCS系统无源刻度测量方法的可靠性，必须对ISOCS刻度软件进行内部一致性检验和准确性检验[1]。

In this dissertation, passivity and scattering theory are discussed to introduce wave variables to deal with constant time delayed teleoperation system.

本文首先采用基于无源性与耗散理论的波变量方法保证存在固定传输时延的遥操作机器人系统的稳定性。

As Ethernet Passive Optical Network is one of the most effective ways for broadband access, it is important to set up a stable and effective network management system.

以太网无源光网络是宽带接入的最有效方式之一，为其建立一套稳定、有效的EPON网络管理系统显得尤为重要。

Though there is no unrealizable technical difficulty for FTTH, its success shall highlight the following aspects and integrate efforts to solve the key points: develop new device and kernel control chip adapting to features of FTTH, reduce the cost of optoelectronic devices and passive devices; develop low cost, easy installation indoor optical fiber, cable and linker as well as matching construction equipments and tools; develop high density, easy operation optical fiber distribution frame; and develop concentrated remote monitor, management techniques and systems.

FTTH技术是未来宽带接入的主要模式，从长远来看也是其他技术无法取代的，FTTH虽然没有技术上不可实现的难点，但要使FTTH走向成功，以下方面值得重视并应集中力量攻关：开发适应FTTH特点的新型器件和核心控制芯片，降低光电器件和无源器件的成本；开发低成本、易安装的室内光纤、光缆和连接器及相配合的施工仪器工具；开发高密度、易操作的光纤配线架；开发集中的远程监视和管理技术及系统等（178）。

The passivation control problem for a class of linear singular systems is investigated.

考察了线性广义系统的无源性控制问题。

The objective is to design a feedback control law such that the closed-loop system is both quadratically stable and strictly passive for all the admissible uncertainties.

目的是设计一个反馈控制器使得闭环系统是二次稳定，同时具有严格无源性。

In this paper, a passive optical network based on ATM is presented, and APON's access mechanism is anatomized.

介绍了基于 ATM的无源光网络，对该系统的接入机制进行了深入讨论。

It has the advantages of minitype,simple structure,passive sensing head, little spectral deformation, simultaneous multi-parameter measurement.

该系统具有小型化、结构简单、探头无源、所得光谱变形小、多参数同时测量等特点。

The novel locating system aiming at the noncooperation source will take the advantage of future war . By analyzing the energy of reflected signal of television and radio it can realize the location estimate in space .

而针对非合作辐射源的新型无源探测系统将取得未来战争优势，通过分析被目标反射的广播电视信号的能量，实现对空中目标的定位。

Be reduced to the minimum.The HF have no-power crossover network .

系统已内置优化无源分频网络。

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％。