查询词典 number system

Additionally, we found that the throughput of slotted FH—CDMA system is near that of unslotted system, althrough the number of frequency bins is not very large e.

通过比较，更正了人们长期以来认为时槽系统的性能优于非时槽系统的错误观点，指出在FH—CDMA系统中信道时间分槽并不能增加系统的吞吐量。

Because the steady state probability of the M/G/inf queuing system is related to the average packet length only and not related to the distribution of packet length, we propose M/M/inf model for the DS CDMA/unslotted ALOHA system with variable number of fixed-length packets. The analyzed throughput of M/M/inf queuing model is closer to the simulation throughput than the analyzed throughput of M/M/1 queuing model is.

由於M/G/inf在稳定状态下的机率只与平均封包长度有关，与其分布状况无关，所以我们提出M/M/inf模型来分析直接序列分码多工/非同步阿罗哈系统同时拥有可变的固定长度封包数。M/M/inf排队模型生产效能分析结果会比M/M/1排队模型的生产效能分析结果更接近系统生产效能的模拟曲线。

2DRG co-cultured with sciatic nerve undergoing Wallerian degeneration for 14days in vivo in serum free DMEM/F12,1sciatic nerve segment was added into co-culture system at the first moment,the axons were strong and straight and could adhered to each other,and the number of axons dramatically reduced compared with that of DRG cultured alone in serum free medium.2DRG cultured in serum free DMEM/F12for 4days,then the sciatic nerve segment was added into the culture system for 3days,the axons became straight and part of them adhered to each other.

分别在无血清和有血清的条件下将新生鼠的背根神经节和体内变性14天的大鼠坐骨神经段进行联合培养作为实验组，并以在相应条件下单独培养的DRG的轴突的生长情况作为对照组来观察比较轴突的生长情况。

Distinguishing from the former researches about CR service communication interruption, only spectrum handoff times exceed a certain number, communication interruption will occur. This strategy can reduce the COP of CR services.(3) Some coexistence issues between WRAN and DTV system are studiedFirstly, the network architecture, system parameters, and self-coexistence of Wireless Regional Area Network are investigated, and convergent performances among overlapping Base Station are simulated and validated. Then, a simple coexistent scenario between WRAN and Digital TV is designed to analyze the interference from WRAN BS to DTV receiver.

3研究了WRAN和DTV系统共存时的若干问题首先对无线区域网(Wireless Regional Area Network，WRAN)本身网络结构、系统参数和自共存机制进行了研究，仿真验证了WRAN重叠覆盖区基站(Base Station，BS)之间同步的收敛性能；接着设计了一种分析WRAN BS干扰数字电视(Digital TV，DTV)接收机的共存场景，通过研究发现了一些干扰控制的临界值，这些临界值对于WRAN的设计和部署具有指导性意义。

Over the years, Yutu with a large number of domestic partners set up a lasting and stable relations of cooperation, and has been high-quality products, perfect marketing system, perfect quality assurance system has won the industry user's trust and support, in the digital security field a high visibility and influence.

多年来，玉兔公司与国内众多的合作伙伴建立了持久稳定的合作关系，并一直以高质量的产品、完善的市场营销体系、完善的质量保障体系赢得了各行业用户的信任与支持，在数字化安防领域取得了较高的知名度和影响力。

The invention discloses a method for negotiating a voice encoding/decoding format in a communication system, in which a caller mobile station originates to negotiate the voice encoding/decoding format with a callee mobile station, the method comprises that: a mobile switch centre of the communication system receives an originating signal transmitted by the caller mobile station, the originating signal carries the number of the callee mobile station; a voice encoding/decoding format list which is latest used by the callee mobile station is acquired according to the originating signal in a database in which mobile station information is stored; the voice encoding/decoding format used when the caller mobile station is communicated with the callee mobile station is determined, and voice carrier of the caller mobile station and the callee mobile station is established in the voice encoding/decoding format.

本发明公开了一种通信系统中协商语音编解码格式的方法，主叫移动台始发与被叫移动台进行协商语音编解码格式，包括：通信系统中的移动交换中心接收到主叫移动台发送的始呼信号，该始呼信号中携带有被叫移动台的号码；根据始呼信号在存储有移动台信息的数据库中获取到被叫移动台最近使用的语音编解码格式列表；决定主叫移动台与被叫移动台进行通信时使用的语音编解码格式，并且以该语音编解码格式建立主叫移动台和被叫移动台的语音承载。

Wei, Jin and Southern and Northern Dynasties of "九品中正system", which at that time changed the number of state, county Executive random places around the state of accepting feather one's nest, the selection of some of the more talented people into the career, but the system was completely family later Han dominated, family background, family status as a sole criterion for evaluation of officials, in fact,豪族forces has become a tool for control of election officials, the result must be "no寒门top grade, inferior without gentry."

魏晋南北朝实行&九品中正制&，这在当时多少改变了州、郡地方长官随意左右、受贿营私的状况，选拔出一些比较有才能的人进入仕途，但这个制度到后来完全被世家大族所把持，家世、门第成为评定官员的唯一标准，实际上已成为豪族势力控制选官的工具，其结果必然是&上品无寒门，下品无士族&。

Electric power system harmonic is one of the most important parameters. With the development of electric power and electron technology, a number of the nonlinear loads and all kinds of commutating equipments are widely applied in every walk of life, what they bring a mass of harmonic current make the content of harmonic increase in the power system and quality of power drop.

电力系统谐波是电能质量的重要参数之一，随着电力电子技术的发展，大量的非线性负载和各种整流设备被广泛的应用于各行各业，使电网谐波含量大大增加，电能质量下降。

As the module number of the system increases,the state space of the whole system may exponentially ex- plods Compositional reachability analysis is an effective approach to alleviate the problem.

当系统中的模块比较多时，系统的整体模型有可能出现状态空间的指数级爆炸，组合可达性分析是缓解这一问题的一种有效方法。

The number of system calls has quadrupled, more or less, depending on what you mean by "system call."

和以前相比，系统调用的数量已经增长了4倍，这些增长或多或少地与我们所说的&系统调用&有很大关系。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。