In this paper, to resolve the problem of channel access in the application of short distance wireless communication system, two mechanisms are discussed which are roll-call access and contention access.

In 802.11e, enhanced Distributed coordinate function ( EDCF) allows wireless station to access the channel by contention.

这个协议所提出的基于竞争接入信道的机制称为增强型分布式协调方式（EDCF）。

互联网摘选

Analysis on ⅰ Type Model of Access Mode of the Contention-Collision Cancellation in LAN

竞争－冲突淘汰存取方式Ⅰ类系统模型性能评价

互联网摘选

A New Kind of Medium Access Control Protocol with Contention

一种新的竞争型介质访问控制协议

互联网摘选

There are mainly two kinds of medium access functions, contention access function and center controlled scheduling function.

MAC层接入方式主要有竞争接入和中央控制的调度接入两种。

互联网摘选

To reduce database contention independent of making disk configuration changes, try approaches that may reduce database access contention or improve file access time.

如果希望减少数据库争用，但是不愿意修改磁盘配置，那么应该尝试减少数据库访问争用或改进文件访问时间的措施。

互联网摘选

And I live on, but in grief and self-contempt,

我活着，自怨自艾，悲哀抑郁'

互联网摘选

Group Counseling& the Effective Way to Improve Interpersonal-relations of Self-contempt Undergraduates

团体咨询&提高自卑心理大学生人际交往能力的有效途径

互联网摘选

Self-contempt: Ignore the small things. Forget about your worries.

自卑：忽视那些琐事，忽略你的苦恼。

互联网摘选

An empirical study of class psychological consultancy and undergraduates self-contempt

团体心理咨询对大学生自卑心理影响的实验研究

互联网摘选

Second, it will help protect the inlays, purflings, and the rosette from color contamination due to the oils and dyes in the back and sides of the classical guitar.

其次，它会保护镶嵌，内饰线和音孔饰圈等不会相互染色，特别是来自背侧板的油脂和颜色。

互联网摘选

First, I analysed the trace, poisonous organic contamination, both qualitatively and quantitatively, by mass spectrometry ( GC/ MS) and gas chromatography, using an electron capture detector ( GC/ μ-ECD).

首先，利用化学仪器（GC-MS和GC-μECD）分析方法，根据不同的色谱条件对有机有毒微污染物进行了定性和定量分析，确定了这些物质的种类和浓度。

互联网摘选

Trace metal contamination in sediments of the Pearl River Estuary and the surrounding coastal area, South china;

华南珠江入海口及其周边海岸地区沉积物中痕量金属元素污染；

provided by jukuu

The new method and instrument with the technology of Surface Plasmon Resonance ( SPR) for the water trace contamination is a cross-research on multi-disciplines.

将表面等离子共振（SPR）检测技术应用于生态环境痕量污染物检测新方法、新仪器的研究，是一项多学科交叉的研究课题。

互联网摘选

A new system for detecting hydraulic oil contamination was presented.

研制了一种新型液压油污染检测系统。

互联网摘选

An Inquiry into the Oil Contamination Control Method of Hydraulic System

液压系统油液污染控制方法探讨

互联网摘选

Study of Microbial Remediation for Oil Contamination in Loess Region

黄土地区石油污染的微生物修复研究

互联网摘选

Interaction between oil contamination and microbial community structure

石油污染与微生物群落结构的相互影响

互联网摘选

Q2.Is it likely that contamination with the identified hazard could occur in excess of the acceptable level or could increase to an unacceptable level?

对于已识别的危害的污染情况是否极有可能发生超过可接受水平，或增加到不可接受水平？

互联网摘选

According to their characteristics, the contamination source, hazard and prevention method of the contaminations are analyzed in the article.

本文按此分类对图书馆内主要污染物的来源、危害和防治进行分析。

互联网摘选

This article summarizes the physiological and biochemical characteristics, distribution, sources of contamination, hazard and the detections methods of listeria monocytogenes.

本文综述了单核细胞增生李斯特菌的生理生化特征、分布、污染途径、危害与流行病学概况和检测方法。

互联网摘选