Multi-carrier and direct-spread-spectrum are employed by CDMA2000 to support wideband data service.
CDMA2000采用多载波和直接序列扩频两种方式来达到提供宽带数据业务的目的。
Resistant organisms spread via direct contact, environmental surfaces, waterways, and food.
耐药生物可通过直接接触、环境表面、水路以及食品进行传播。
Recent events make it likely that some migratory birds are now implicated in the direct spread of the H5N1 virus in its highly pathogenic form.
最近的事件表明一些候鸟有可能涉及直接传播高致病型H5N1型病毒。
KoRV (koala retrovirus) integrates itself into the animalsâ DNA, and may be passed on genetically as well as through direct infection, experts have found, though they are unsure how it is spread.
尽管还无法确定病毒KoRV（考拉反转录病毒）是怎么传播的，但专家已经发现，这种病毒能够自我整合入动物的DNA，可随着基因遗传给后代，直接接触也会感染。
The mail databases were spread across two IBM EXP arrays (direct connect SCSI), configured as RAID 0 on each server.
邮件数据库分布于两个IBMEXP阵列（直连SCSI），阵列在每个服务器上都配置为RAID0。
Infection is spread from person to person by direct contact with nose and throat discharges, saliva, fluid from blisters, or the stool of infected persons.
人与人直接接触导致感染蔓延，呼吸道分泌物，唾液，疱疹的脓液或患者的粪便都是潜在的传染源。
Using services like Cards Direct is a quick and easy way to spread the holiday cheer with your website address attached to it.
用像CardsDirect这样的服务来发送节日的祝福是一个简单快捷的方式，要记得附上你的网站地址。
Art design symbol is a medium to spread the art design information, and it is a direct carrier to embody the design culture effectively.
艺术设计符号是艺术设计信息传播的媒介，是设计文化有效展现的直接载体。
It mainly contains the digital modulate system, the SS communication theory and the direct sequence spread spectrum (DSSS) system.
主要是数字调制系统、扩展频谱通信原理和直接序列扩频系统等内容。
Spread spectrum has two distinct flavors: direct sequence and frequency hopping.
该技术有两个明显的变型：直接顺序与跳频。
Hepatitis C is spread mostly by direct contact with human blood as a result of blood transfusions and re-using non-sterilized needles and syringes.
型肝炎主要传播途径是直接接触患者血液，其原因是输血和重复使用未经灭菌针头和针管。
Direct sequence spread spectrum communications is one of the most typical spread spectrum modes.
其中直接序列扩频通信是目前使用最典型的扩频工作方式。
Secondary malignant tumors can occur by hematogenous spread or direct invasion.
继发的恶性肿瘤可以是血行转移或直接侵犯而来。
An SEA can result through hematogenous spread or from direct extention of adjacent discitis or osteomyelitis.
SEA可以使血行播散所致或邻近结构直接感染。
Now is the spread of sports most direct and effective way.
现场报道是现在体育赛事传播的最直接也是最有效的途径。
The performance of Direct Sequence Spread Spectrum(DSSS) in severe pulsed noise interference will be badly degraded when the duty factor is small.
当脉冲干扰占空比较小时，干扰能量集中，导致直接序列扩频（DSSS）系统的误码性能较差。
As is known to all, light is spread in direct line.
众所周知，光是以直线方式传播的。
PLC results from hematogenous spread to lung, with subsequent interstitial and lymphatic invasion, or, as in this case, direct lymphatic spread of tumor from hilar or mediastinal lymph nodes.
再次谢谢马哥！PLC可由血道转移，随后是间质浸润、淋巴道转移，或如此例直接由肺门或纵隔淋巴结的转移癌蔓延而来。
A direct sequence spread spectrum (DSSS) receiver has strict requirement on local carrier's synchronization, and always needs complex circuits.
直接序列扩频接收机对本地载波的同步要求非常严格，以往所需电路复杂。
An algorithm for the suppression of narrowband interference in the direct sequence spread-spectrum (DSSS) systems is presented.
提出了直接序列扩频通信系统中抑制窄带干扰的一种算法。
According to the signal synchronization of LEO's direct sequence spread spectrum (DSSS) communication, a method based on software radio platform was described.
本文针对低轨卫星直接序列扩展频谱(DSSS)通信中的信号同步问题，提出了基于软件无线电平台的处理方法。
There are two main alternatives, Direct Sequence Spread Spectrum and Frequency Hopping Spread Spectrum.
主要有两种选择，直接序列扩频和跳频扩频。
Presented in this paper is a direct sequence spread spectrum radio based on virtual technique in which direct sequence spread spectrum, software radio and virtual technique are combined.
文中提出的虚拟式直接序列扩频通信电台将直接序列扩频通信、软件无线电和虚拟技术相结合。
In direct sequence spread spectrum communication system, enemy is assumed to detect whole PN sequence chip by chip and a modulated retransmitted interference is created.
在直接序列扩频通信系统中，假设敌方能够逐个比特地检测到整个PN序列，并产生一个调制的转发干扰。
A better method for direct sequence spread spectrum (DSSS) receiver to decrease the acquisition time is proposed.
提出一种减小直接序列扩频(DSSS)接收机信号捕获时间的改进方法。
It is studied that the code acquisition technology of direct sequence spread spectrum system in LEO satellite communication.
研究了用于低轨卫星通信的直接序列扩频系统的码捕获技术。
The modulation types of data link for UAV are simple, such as BPSK, 2FSK , direct spread spectrum. The transmitted rate and anti-interference performance of them are limited.
目前，无人机数据链系统采用的调制模式都比较简单，如2FSK、BPSK、直接扩频技术等，传输速率与抗干扰能力有限。
The modulation types of data link for UAV are simple, such as BPSK, 2FSK , direct spread spectrum. The transmitted rate and anti-interference performance of them are limited.
目前，无人机数据链系统采用的调制模式都比较简单，如2FSK、BPSK、直接扩频技术等，传输速率与抗干扰能力有限。
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