英语翻译百度翻译貌似不太准确,有些地方语句不是很顺.我要语句通顺的.下面是文章.Frequency Division M

英语翻译
百度翻译貌似不太准确,有些地方语句不是很顺.我要语句通顺的.下面是文章.
Frequency Division Multiplexing
Frequency division multiplexing (FDM) is the technical term applied to a network system that uses multiple carrier frequencies to allow independent signals to travel through a medium.FDM technology can be used when sending signals over wire,RF,or optical fiber.Figure 6-1 illustrates the concept,and shows the hardware components needed for FDM.
In theory,as long as each carrier operates at a different frequency than the others,it remains independent.In practice,however,two carriers operating at almost the same frequency or at exact multiples of a frequency can interfere with one another.To avoid problems,engineers who design FDM network systems choose a minimum separation between the carriers.The mandate for large gaps between the frequencies
assigned to carriers means that underlying hardware used with FDM can tolerate a wide range of frequencies.Consequently,FDM is only used on high-bandwidth transmission channels.In summary,
Frequency division multiplexing {FDM) allows multiple pairs of senders and receivers to communicate over a shared medium simultaneously.The carrier used by each pair operates at a unique frequency that does not interfere with the others.
别拿百度翻译和有道来抗我啊，

频率分隔多路传输
频率分隔多路传输（FDM） 是适用于网络系统的一个技术术语,此技术使用多个运营频率,以便使每个信号的传输是相对独立的.当通过网络、无线电频率、或光纤发送信号时,可以使用频率分隔多路传输技术.图6-1解释了这一概念,并说明了使用频率分隔多路传输系统所需的设备硬件要求.
理论上来讲,只要每个运营商以不同与其他人的频率传输信号,那么每个信号就应该是相对独立的.然而在实践中,两个运营商在几乎相同的频率或某个频率的精确倍数下传输信号的话,他们之间会造成相互的干扰.为了避免出现上面提到的问题,设计频率分隔多路传输网络系统的工程师们设定了运营商之间在允许范围内的最小频率间隔.根据授权,分配给各个运营商的频率存在着较大差距,这就意味着,与频率分隔多路传输系统一起使用的基本配置硬件设备就可以拥有一个广泛的频率范围.因而,频率分隔多路传输技术仅可用于高带宽（LAN)传输通道.总之,频率分隔多路传输系统（FDM)允许多组发送方和接收器同时共享媒体沟通.每一个运营商使用的是不同于他人的、唯一的传输通道,因此他们之间不会造成干扰.