DCMA combines the conventional CMA and SR-CMA, and the switch process between CMA and SR-CMA is realized by decision circle ring which boundary is decided by the signal-to-noise radio.

To resolve the data packet collision caused by hidden and exposed terminals in Ad Hoc network, a carrier sensing protocol based dual channel multiple access ( DCMA) was proposed.

为了解决ad hoc网络由隐终端和暴露终端引起的数据报文冲突问题，提出了基于载波监听的双信道多重接人（DCMA）协议。

Study on Manpower Resources Management of DCMA and Its Inspiration to PLA's Army

美军DCMA人力资源管理研究及对我军的启示

The paper analyzes the performance of DCMA series protocol by simulation.

文章通过仿真对DCMA协议的性能进行了分析和比较。

The development of geophysical prospecting surveying instrument has made great progress.

测绘技术的飞速发展使石油物探测量作业发生了根本性的转变。

A modern digital electrical prospecting instrument characterized by transmitting square wave current and measuring the geoelectric parameters of real time display at the instant of minimum interference amplitude is introduced.

本文介绍一种利用现代数字电法仪方波发射、实时显示的特点，在强干扰条件下，选择地电干扰幅度最小的时刻进行采样观测的方法。

The paper divided the seismic prospecting instrument into six periods according to the technology characteristics, and introduces the main characteristics of each period.

文章依据技术特点将地震勘探仪器划分为六代，并分别介绍了每一代仪器的主要性能；从5个角度分析了地震勘探仪器发展变化的历程和一般规律；

The Development of seafloor prospecting instrument in China

中国海底地球物理探测仪器的新进展

This paper made a discussion about current geophysical prospecting instrument and its trend.

本文分析了世界物探仪器的发展近况，讨论了其发展趋势。

Oil geophysical prospecting instrument factory

石油地球物理勘探仪器厂

Study on Theory of Spectral Shaping Filter in the Seismic Prospecting Instrument

地震勘探仪器中频谱整形滤波器的理论研究

Do not be whirled about, but in every movement have respect to justice, and on the occasion of every impression maintain the Faculty of comprehension or understanding.

不要无头绪地乱忙，每一行动都要服从正义，对产生的每一印象都保持理解和领悟。

The abnormal rate of attention, hearing-memory span, language expression, reading ability and faculty of understanding in LD group were higher than control group ( 41.2%? 46.2%? 68%? 60.2%? 72%, respectively, P < 0.05).

LD组注意力、听觉记忆广度、语言表达能力、阅读能力和理解能力检测异常率分别为41.2%、46.2%、68%、60.2%、72%，比正常组明显增高（P<0.05）。

The comprehensive tests of learning ability was performed in 93 children with learning disabilities. It was included intelligence quotient ( IQ), visual-motor integration ( VMI), attention, hearing-memory span, language expression, reading ability and faculty of understanding.

【方法】对93例LD儿童进行学习能力综合测试，包括智力（IQ）、视&动统合（VMI）、注意力、听觉记忆广度、语言表达能力、阅读能力、理解能力等测试。

Results The intelligence, visual-motor integration, attention, hearing-memory span, language expression, reading ability and faculty of understanding of these learning disorder children were improved, and their academic achievement was developed.

结果学习困难儿童在智力、视-动统合能力、注意力、听觉记忆、阅读、语言表达和理解能力等方面有一定程度的改善，学习成绩有所提高。

Only by understanding the cultural differences can the learners of English heighten the faculty of understanding the cultures and facilitate the flow of cultures between the two languages.

英语学习者需要深入了解汉英文化之间的差异，才能提高文化理解力，促进汉英文化的沟通交流。

How to Cultivate Students ′ Faculty of Understanding Mathematics

学生数学理解能力的培养

The results showed that the shell lac wax had good role in decreasing the loss of water, lowering the rate of decay and inhibiting the rate of respiration. It could also enhance the surface lighteness of eggplant and raise commercialization.

结果表明，虫胶果蜡可减少茄子的水分损失，降低腐烂率，抑制呼吸，同时增加果面亮度，提高商品价值。

The experimental results indicate the watermarks are transparent and robust against some kinds of process such as JPEG compression, noise, cut out, lighteness and contrast adjustment and so on.

实验结果表明，该水印系统具有良好的透明性，对JPEG有损压缩、噪声、裁剪、锐化、亮度和对比度调整等图像处理有较好的鲁棒性。

The Circuit Design of Optical Lighteness Control in the Calibration System

定标系统光源控制电路设计

Emphasis then is given to the analysis of logical design and technical mechanism of DCMI MR, and the mirror site in China of DCMI MR is built cooperating with library of Chinese Academy Institute of Science.

然后着重分析了DCMI MR的逻辑设计与技术实现，在此基础上，进行了DCMI MR中国镜像站点的建设，目前DCMI MR中国镜像站点已在网络上公开使用。