例句與造句

1. The thesis describes a prototype fractional frequency synthesizer which is supported by a project granted by the ministry of science and technology of pr china . firstly , based on the principle of pll , this paper briefly describes three basic pll components : phase detector ( pd ) , low pass filter ( lpf ) , voltage controlled oscillators ( vco ) , analyzes the linearized pll and summaries the transfer functions of third - order pll with ideal intergrator filter respectively . based on a microwave vco , the single point frequency pll frequency ranging from 2 . 2 to 2 . 5ghz is developed
   首先，從鎖相環(huán)的基本理論、原理出發(fā)，分析了鎖相環(huán)中的三個(gè)基本部件：鑒相器、環(huán)路濾波器和壓控振蕩器，此后，針對(duì)線性化鎖相環(huán)進(jìn)行了分析，研究了在使用比例積分濾波器時(shí)，三階鎖相環(huán)的環(huán)路參數(shù)計(jì)算；在電路實(shí)現(xiàn)時(shí)選用了lmx2353 ，在此基礎(chǔ)上，完成了2 . 2 ~ 2 . 5ghz范圍內(nèi)的小數(shù)頻率合成器設(shè)計(jì)。
2. It's difficult to find intergrator in a sentence. 用intergrator造句挺難的