uan是什么意思，uan怎么读，uan的意思是：uric-acid

uan怎么读，uan的音标和真人发音

abbr.uric-acid nitrogen 尿酸氮

we also analysis the merit and defect of them and choose stop-wait ARQ protocol to meet the UAN .: 一方面介绍了三种流量差错控制协议的工作原理，分析了它们的优缺点，结合水下通信网络的特点选择停止等待ARQ协议。

In UAN , the data link layer protocols use the simplest and basic stop-and-wait protocol and met UAN \'s initial design requirements .: 在UAN数据链路层协议的设计中采用了最简单、最基本的stop-and-wait协议，基本满足了网络初期的设计要求。

On the basis of this , we researches design and simulation of UAN \'s protocols and designs a simple practical effective UAN \'s protocols .: 在此基础上，进行了水声通信网络协议的设计和仿真研究工作，设计了一个简单、实用、有效的水声通信网络协议。

We first summarize on development and characteristic of the UAN , and design three layered architecture that are physical layer 、 the data link layer and the network layer .: 本文首先综述了水声通信网络的发展概况及其特点，设计了水声通信网络的三层结构，即物理层、数据链路层和网络层。

Then we propose a naming method & universal Agent naming ( UAN ) and name resolution mechanism . Based on this , we implement the transparent locating for mobile agents .: 然后提出了一种称为通用Agent命名UAN（universalAgentnaming）的命名方法，并给出了相应的名字解析机制，解决了透明寻址问题。

277 patients ( 96.9 % ) complained of bilateral gradual hearing loss and 9 patients ( 3.1 % ) complained of unilateral hearing loss ( unilateral auditory neuropathy , UAN ) .: 病程平均3.3年。其中277例（96.8%）表现为双耳渐进性听力减退，9例（3.1%）表现为单耳听力减退（单侧听神经病，UAN）。

Uric acid nephropathy ( UAN ) also known as gouty nephropathy is due to excessive concentrations of uric acid urate deposition in the kidney , kidney damage caused by the crystallization .: 尿酸性肾病（UricacidNephropathy，UAN）又称痛风性肾病，是由于血尿酸浓度过高，尿酸盐在肾脏沉积、结晶导致的肾脏损伤。

This article introduces five common methods for creating task models : HTA , UAN , GOMS , CTT , Wisdom . We summarize advantages , disadvantages and appropriate enviroment of each method . We also get some future development directions of task modeling me - ( thods ) .: 详细介绍了HTA，UAN，GOMS，CTT，Wisdom五种常用的任务模型建模方法，分析了各方法的优缺点及适用环境，并对任务建模方法的未来发展方向进行了展望。

Research in overseas showed , thiourea inhibited hydrolyzation of urea , decreased the volatilization of NH  3 and postponed mineralization of urea-N effectively in soils when applied with urea or UAN . Thiourea can stimulate growth of plants and increase yield .: 国外的一些研究表明，硫脲与尿素或硝铵尿素（UAN）配施能有效抑制土壤中尿素的水解、减少NH3挥发损失和延缓氮素的矿化过程，同时促进作物生长、增加作物产量。

Therefore , MAC protocols originated from the terrestrial wireless communication can not be directly applied to underwater acoustic communication , and dedicated MAC protocols should be proposed.By reviewing a large number of domestic and foreign researches under UAN , we identify several key problems that need to be addressed for designing MAC of UAN : delay , power consumption and fairness .: 因此，陆地无线通信MAC协议不能直接适用于水声通信，需专门研究适用于水声网络的专属MAC协议。通过参考大量国内外文献，本论文认为水声网络中主要需要解决几个问题：延时、能耗、公平性及可扩展性。

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