求翻译：脉冲形成器输出的码型都是矩形脉冲，占用较宽的频带，为了更适合信道传输的要求，可通过发送滤波器把它变换成比较平滑的波形。发送滤波器滤掉信号的高频部分，即信号的突变部分，将其平滑化。如图6-21中的第3张图所示是什么意思？

Pulse output of the pattern formation is a rectangular pulse, occupy a wide frequency band, in order to be more suitable for the channel transmission requirements, by sending it to transform the filter into a relatively smooth waveform. Transmit filtering out the high-frequency signal, that signal t

Pulse shape of the output line code is square pulse, in order to occupy a more wide-band, and more suitable for multicast transmission of requests can be sent through filters, it transforms into a relatively smooth waveform. Sending filters filter out signals of high frequency part, i.e. signal muta

The pulse former output code all is the rectangular pulse, takes the wide frequency band, in order to a more suitable channel transmits the request, may through transmit the filter to transform it the quite smooth profile.Transmits the filter to filter out the signal the high-frequency unit, namely

Pulse forming device output formats are rectangular pulses, taking up over a wide frequency band, to a more appropriate channel transmission requirements, can be sent through the filter into smoother waveform it becomes. Sending filters filter out high frequency part of the signal, namely mutation p

Yard types that the pulse forming device outputs are all rectangular pulses, take up the wider frequency band, the requirement transmit in order to be suitable for the channel, can convert it to more smooth wave form by sending the electric-wave filter. Send the electric-wave filter after straining