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After studying the MAC protocol of Ad hoc network and by modifying the Wireless Token Ring Protocol, a new uncontested Distributed Parallel Wireless Polling Access Protocol that can provide MAC QoS guarantees for Ad hoc network is presented, and the mathematical model is established by the embedded Markov chain theory and the probability generating function method. Based on it, the mean value of queue length and message waiting time are explicitly obtained.

摘要该文对Ad hoc网络的MAC层协议进行了研究，通过对无线令牌环协议进行改进，提出了一种新的具有QoS保障的无竞争的分布式并行无线轮询访问协议，并采用嵌入Markov链和概率母函数的分析方法，用限定服务规则进行了系统建模，在系统模型的基础上得到了系统的平均排队队长以及平均等待时间的解析结果。

There was only a token protest against the new system.

对新的体制只有象征性的反对。

Every step by which they have advanced to the character of an independent nation seems to have been distinguished by some token of providential agency

他们在迈向独立国家的进程中，似乎每走一步都有某种天佑的迹象

Obviously,the teapot is no longer the token of pudendum,but has become the symbol of penis.

该地俗语有云"太公的卵子，人人有份"，也可说是男根崇拜的一种折射反映。

As the token of pureness, the white and well-structured jade has been appreciated as treasure from time immemorial.

因为中国古代对玉的颜色非常重视，它不仅和质量有关，而且包含着不同的意义。

S for a random signal, self-correlated function can always be the integrate token of its statistic average value.

bstract 对于一个随机信号，自相关函数往往最能完整地表征它的统计平均值。

By the same token, Americans will not re-elect a government that makes them lower their standard of living.

但是金融界的头头们不服，「高盛」在拼命归还政府的纾困贷款后，首席执行长立刻给自己一亿美元的红利犒赏。你能怎样？

In the IBM Token Ring Network, the transmit or output receptacle on an ''.

在ibm令牌环网中，一个入口单元的发送或输出插座。

The result of scan is stored in the global variable token — this simplifies the recognizer.

3 识别器 Scan函数的结果被存取在全局变量中—-这简化了识别器的工作。

Remember, you will need your registrant number and application token when using the Dot TK API.

请记住，您将需要您的注册数量和应用程序令牌当使用传统知识的API斑点。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。