探测的

PbWO4 and CeF3 which are newly developed inorganic scinti1latr in our country have been studied. Photo-electricity detector systemes which have high γ sensitivity and relative insensitive to neutron and fast time response were assembled by using CeF3 and photomultiplier tube. The ratio of signal-to-noise for γ ray detection can be up to more than 10 times in close distance n,γ commix pulse radiation field by using this detector system.

对PbWO4和CeF3等近年国内新研制的无机闪烁体进行了系列研究，使用CeF3分别配光电倍增管和光电管，组合出了对γ辐射灵敏度高，对中子相对不灵敏，同时脉冲响应也快的光电探测系统，应用以此为基础的探测技术在近距离n，γ混合脉冲辐射场中，可将脉冲γ辐射探测信噪比提高一个量级以上。

At the same time, new information about the underwater target can be got and the detectability can be increased.

在机载激光探测水下目标过程中，若采用偏振激光代替激光脉冲进行探测，不但可以压缩回波信号的动态范围，减少水面回波的影响，而且还能增加新的信息和可探测性。

By taking the noise of an infrared focal plane detector as the main factor, an operating distance estimation equation for point targets is derived. A calculation example of the operating distance of a typical infrared detection system is given.

本文推导了以红外焦平面探测器噪声为主要因素的点目标红外探测系统的作用距离估算方程，结合实例求解了典型红外探测系统的探测系统的作用距离。

Article 1 These Measures are formulated in accordance with the "Meteorology Law of the People's Republic of China" with a view to protecting meteorological sounding environments and facilities, ensuring the smooth carry-out of the meteorological sounding work, guaranteeing the representability, accuracy and comparability of the meteorological sounding information obtained, improving the capacities of monitoring climate changes, the accuracy of meteorological forecast and the level of meteorological services, so as to provide reliable safeguard for national economy and people's lives.

第一条 为了保护气象探测环境和设施，保证气象探测工作的顺利进行，确保获取的气象探测信息具有代表性、准确性、比较性，提高气候变化的监测能力、气象预报准确率和气象服务水平，为国民经济和人民生活提供可靠保障，根据《中华人民共和国气象法》，制定本办法。

The detector can realize imaging of very weak particle flow such as high-energy photons, electrons and ions flow, so it can be used for deep space exploration, spectral measurement, high-energy physics and bio-luminescence detection.

该探测器可以实现极微弱的高能光子、电子和离子等粒子流的成像探测，因此在深空探测、光谱测量、高能物理以及生物发光探测等方面将有重要的应用。

In order to extract the hierarchical and the narrative structure of news videos, the thesis puts forwards some low-level news video structure mining methods, including the shot detection method based on background tracking, the anchorperson shot detection method called AnchorClu and the news story detection method called SATS, which fuses multi-features.

为提取新闻视频的分层结构和叙事结构，提出了基于背景的镜头探测算法，基于聚类的播音员镜头探测方法AnchorClu，以及融合多特征的新闻故事单元探测方法SATS。

With the project as a practical example,part of the detection curves and infrared radiation field intensity values obtained from infrared detection in the cross-section are analyzed in the paper.

介绍了红外探水技术的基本原理和布点方法，通过实例分析了分部红外探测得到的红外辐射场强值和绘出的红外探测曲线，得出探测结论，并和实际情况进行验证，说明探水效果良好，为隧道顺利施工提供科学依据。

In the early of 1996, lidar systems, respectively used for detecting Rayleigh scattering and Na resonance fluorescence, were successfully designed in Wuhan Institute of Physics and Mathematics. But the lidar system can operate only at one kind of wavelength every time due to lack of laser equipment, so it can detect either the mesosphere of 30～80km or the sodium layer of 80～110km at a time and cant detect both simultaneously.

武汉物理与数学研究所早在1996年就研制成功了瑞利激光雷达和钠共振荧光激光雷达，但有限的设备使得激光雷达系统每次仅能运行在一种激光波长下，每次只能探测30~80km的中层大气或80~110km的高空钠层，而不能同时探测两者，造成了探测数据在空间和时间上的不连续。

Based on the structure and principle of the CEFR delayed neutron detection system, a calculating model of the delayed neutron detection signal was proposed.

根据中国实验快堆缓发中子探测系统的结构特点和探测原理，构建了缓发中子探测系统的计算模型。

This paper proposes a calculation model of the failed fuel detection system of China Experimental Fast Reactor based on the experiences from foreign countries and the system design of CEFR. A code using LabWindows/CVI was developed from this calculation model, the minimum broken area which could be detected by the delayed neutron detection system of CEFR was calculated.

在借鉴国外研究成果的同时，结合中国实验快堆燃料破损探测系统的设计特点，建立了CEFR燃料破损探测系统的计算模型，并根据所建计算模型，利用LabWindows/CVI开发了CEFR燃料破损探测系统计算分析程序。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。