time width造句
例句与造句
- Only length times width
就是长度乘以宽度吗 - The main content and creative work in this dissertation include : 1 . simulate the echoes of the radar , namely produce the lfm signals with band width equaling 5mhz , time width in 9 s ~ 42 s and analyze them in frequency domain pulse compression . at the same time suppress the clutter and indicate targets
本文完成的主要工作和创新之处有: 1 .通过仿真模拟回波信号,产生了带宽为5mhz ,时宽在9 s ~ 42 s范围内带目标和噪声杂波的lfm信号,并对其进行了频域脉冲压缩的分析,抑制杂波并显示出目标。 - Calculations indicate that the carrier phase takes effect till the time width of the pulse envelope becomes smaller than the period of the carrier oscillation , and the interpretation of this phenomenon is also presented . it is the difference between phase delay and group delay that causes the sliding between the carrier and the envelope
数值分析的结果表明，当脉宽小于光波周期时，相位的作用开始显现出来，当脉宽比光波周期长时，载波相位的作用可以忽略，并分析了相位起作用的原因，用解析的方法说明正是相延迟和群延迟之间的差别造成了光载波在脉冲包络下的滑动。 - 4 . by using the expression for computing the output pulse ' s rms time width in an optical fiber link with up to fourth - order dispersion ( fod ) , we present an expression of maximum fiber - link length , at which the output pulses can return to its original rms time width , in an optical fiber link with up to fourth - order dispersion
利用包含四阶色散的输出均方根脉宽的表达式，获得了线性超高速光时分复用系统在源啁啾和残余二阶色散的作用下的最佳传输参量。在该最佳参量下，可获得均方根脉宽恢复初始值的最大传输距离。 - At the same time width and blood flow velocity of liver artery in port of liver , width and blood flow velocity of portae vein , the number of blood cells in circulation had been measured . results after liver transplant , the volume of spleen decreased , the mean blood flow velocity of spleen vein and the number of blood cells in circulation increased
方法应用彩色多普勒超声测量术前及术后第1 、 2及4周35例肝硬化合并脾亢病人脾脏的长径、厚径及脾门静脉管径、平均血流速度及峰值血流速度等并进行比较。 - It's difficult to find time width in a sentence. 用time width造句挺难的
- The main content and creative work in this dissertation include : ( 1 ) the characteristics of the lfm signals with band width equaling 5mhz , time width in 9 s ~ 42 s , nlfm signals with band width equaling 5mhz , time width in 9 s ~ 21 s are analyzed in frequency domain pulse compression . the corresponding side - lobes suppression filters are designed and optimized
本文完成的主要工作和创新之处有: ( 1 )分别完成了对带宽为5mhz ,时宽在9 s ~ 42 s范围内lfm信号,带宽为5mhz ,时宽在9 s ~ 21 s范围内nflm信号的频域脉冲压缩的分析和旁瓣抑制滤波器的设计及优化。 - This system can process linear frequency modulation signals ( lfm ) , nonlinear frequency modulation signals ( nlfm ) and taylor quadriphase code signals with time width under 42 s and band width under 5mhz . the experimental results demonstrate that the specification characteristics meet the requirements of practical radar systems
该系统可处理时宽在42 s以内?带宽在5mhz以下的线性调频信号( lfm ) ,非线性调频信号( nlfm )和taylor四相码信号,且技术指标完全满足实用系统的设计要求。 - Generating lfm / nlfm signals whose intermediate frequency is 28mhz and bandwidth is 3mhz and 5mhz and time width is from 6us to 300us based on dds has been discussed in this dissertation . the conclusion is that the wave quality of lfm signal generating through dds is satisfactory and that of nlfm is not perfect
本文基于器件dds对产生中心频率为28mhz 、带宽为3mhz和5mhz 、时宽从6us到300us的不同时宽和带宽的线性和非线性调频信号方面进行了探讨，得出了dds产生线性调频信号（ lfm ）的波形质量可取得满意的结果，但对产生非线性调频信号（ nlfm ）的波形质量却存在不足。