衰减测量

PMMA塑料光纤衰减测量的研究

Research of the measurement of loss of PMMA plastic optical fiber

利用表面电位衰减测量和热刺激放电电流谱（TSD）分析，研究了PTFE（Polytetrafluoroethylene）多孔膜驻极体中的沉积电荷稳定性与充电条件的关系。结果显示，沉积电荷的稳定性与充电参数有关。

The relation between charge stability and poling parameters for porous PTFE electrets has been studied by means of open-circuit Thermally Stimulated Discharge and surface potential decay .

对夏威夷檀香山岛的两个站（H3和H4）钙质沉积物进行了20～100kHz的原位纵波声速和声衰减测量。

In situ compressional wave velocity and attenuation measurements were made at 2 carbonate sediment sites over a frequency interval between 20 and 100 kHz .

为了满足大衰减量值的溯源，研制成功了新的PAS1型衰减测量接收机和新的国家标准装置。

In order to meet the traceability of large attenuation , a new model PAS-1 attenuation measuring receiver and then a new national attenuation standard system are developed .

通过对Simmons等温电流理论的进一步推导，完善了利用表面电位衰减测量材料表层陷阱能量分布的理论和方法，并分析了填料浓度对于材料表层陷阱的影响机制。

The isothermal relaxation current ( IRC ) proposed by Simmons was further deduced , the measurement theory and method of energy distribution of surface trapping centers based on surface potential decay was perfected , and the influence mechanism of filler concentration on trapping parameters was also analyzed .

背向散射法光纤衰减测量的实验研究

Experimental Investigation of Optical Fiber Attenuation Measurement by the Backscattering Method

模拟黄河水的声衰减测量

Sound attenuation measurement of the simulated water of the Yellow River

微波衰减测量过程失控的原因分析及解决方案

Reason Analysis and Solution on Losing Control in Microwave Attenuation Measurement Process

岩体声波衰减测量方法的研究

Study on measure method of acoustic wave attenuation in mine rock mass

海洋沉积物悬浮液声衰减测量

Acoustic attenuation measurement for the suspension of marine sediments

地球站波导馈线小衰减测量的一种新方法

A New Method of Small-attenuation Measurement on the Earth Station Waveguide Feed Line

射频部分替代法的衰减测量分析

Analysis of Attenuation Measurement with the RF Substitution Method

气泡数密度对尾流光束衰减测量的影响

Influence of Bubbles Number Density on Measurement of Beam Attenuation in Ship Wakes

基于荧光衰减测量的蓝宝石光纤温度计

Sapphire Fiber Thermometer s Based on Fluorescence Lifetime Measurement

GB/T15217-1994同轴电缆屏蔽衰减测量方法（吸收钳法）

Methods of measurement of screening attenuation for coaxial cables ( absorbing clamp method )

用光注入电流衰减测量绝缘膜中陷阱的俘获截面

Measurements of Capture Cross Section of Traps in Insulating Films by Photoinjection Current Decay

此外，由磁衰减测量得到了磁通运动的有效活动能。

An effective activation energy for flux motion was obtained from the measurements of magnetization .

人体软组织声衰减测量

Measurement of ultrasonic attenuation inhuman soft tissues

海上蒸发波导下的电波传播衰减测量方案设计

Measurement Design for Radar Electromagnetic Wave Propagation Loss in the Atmosphere Duct over the Sea

GB/T12968-1991纯金属电阻率与剩余电阻比涡流衰减测量方法

Eddy current decay method for measurement of resistivity and residual resistance ratio of pure metals

在微波大衰减测量中，噪声是一项主要误差来源。

Noise is one of important errors in attenuation measurement , especially in the large attenuation measurement .

微波衰减测量技术被用来测量三相流总流的含水量，电容传感器测出其中的油、水比率。

Microwave attenuation technique is used to measure water phase fraction . Capacitance transducer is used to measure oil / water ratio .

该装置在0&42分贝的衰减测量量程内，达到的不确定度优于±5×10~（-4）。

The uncertainty in the measuring range of 0 & 42dB is less than 5 × 10 ~ ( - 4 ) .

研究了单通道和双通道微波衰减测量系统中的射频泄漏所导致的测量误差。

The attenuation measurement error due to RF leakage in a single channel and a dual channel microwave attenuation measurement system is investigated .

从光波的衰减测量决定大气气溶胶的谱分布平流层火山气溶胶对长波辐射的影响

Determination of the size distribution of atmospheric aerosols by means of measurement of optical attenuation the effects of stratospheric volcanic aerosols on longwave radiation

1994年6月，利用光谱辐射计在中国西北敦煌西戈壁地区进行了一次大气衰减测量试验。

Atmospheric spectral extinction measurements for the Gobi Desert were performed with a spectroradiometer and a Halon standard reference during June 1994 at the Gobi of Dunhuang , China .

结果表明：系统基本满足矿山岩体声学性能测试的要求，适应于围岩松动范围，以及坝基较弱夹层的波速与衰减测量。

The results show that the system can elementally satisfy the measure requirement of the acoustic quality of mine rock , and it is adaptable to the wave velocity and the attenuation measure of the loose area of rock , of weak layers under dam base .

对两种含沙量（8.28千克/米~3和31.56千克/米~3）的模拟黄河水进行了在不同频率（3.2&20千赫）下的声衰减测量。

Sound attenuation measurement has been conducted for two kinds of simulated water of the Yellow River , the sand contents of which are 8 . 28 kg / m3 and 31.56kg/m3 respectively , at different frequencies in the range of 3 . 2 to 20 kHz .

用~（109）Cdγ射线衰减法测量管道原油密度和含水率的蒙特卡罗模拟

Monte Carlo Simulation the Density and Water Content of the Crude oil in Pipeline By the Decay of ~ ( 109 ) Cd γ Ray Method

本研究给出了脉冲衰减法测量时探头平均温度的理论解（ATM模型）。

The probe bead average temperature analytical solution ( ATM : average temperature model ) was presented based on the method in this paper .