專業(yè)英語(yǔ)(wps)(文件)
【正文】 ncy variable 離散頻率變量summation sign 求和號(hào)integral 積分discrete harmonic 離散諧波Fourier transform pair 傅里葉變換對(duì)Discrete Fourier Transform (DFT) 離散傅里葉變換finiteduration 時(shí)間有限（信號(hào)）inverse discrete Fourier transform (IDFT) 傅里葉逆變換algorithm 算法putational plexity 計(jì)算復(fù)雜性fast Fourier transforms (FFT) 快速傅里葉變換symmetric 對(duì)稱的time/frequency resolutions 時(shí)間/頻率分辨率inversely proportional 反比energyspectral density 能量譜密度powerspectral density 功率譜密度autocorrelation 自相關(guān)finiteenergy signal 能量有限信號(hào)stationary stochastic signal 平穩(wěn)隨機(jī)信號(hào)Unit 8 The Fundamental of Communicationsdigital signal 數(shù)字信號(hào)time/space variable 時(shí)間/空間變量discretetime signal 離散時(shí)間信號(hào)unitsample signal 單位采樣信號(hào)random process 隨機(jī)過(guò)程signal source 信號(hào)源analog signal 模擬信號(hào)sample 采樣、抽樣high fidelity 高保真block diagram 框圖digital signal processor 數(shù)字信號(hào)處理器analog input 模擬輸入lowpass filter 低通濾波器outofband 帶外sample andhold (S/H) 采樣保持continuoustime signal 時(shí)間連續(xù)信號(hào)analogtodigital converter (ADC) 模數(shù)轉(zhuǎn)換器digitaltoanalog converter (DAC) 數(shù)模轉(zhuǎn)換器timedomain sampling 時(shí)域采樣sampling and quantization 抽樣與量化interpolation插值quantization error 量化誤差periodic impulse train 周期脈沖序列sampling interval 采樣間隔sampling frequency 采樣頻率convolution 卷積operator 算子、算符Fourier transform 傅里葉變換signal spectrum 信號(hào)譜distortion 失真aliasing 混疊Nyquist sampling theorem 奈奎斯特采樣定理bandlimited continuoustime signal 帶寬受限連續(xù)時(shí)間信號(hào)electronic switch 電子開關(guān)capacitor 電容器rectangular impulse response 矩形脈沖響應(yīng)quantization level 量化級(jí)（電平）manytoone mapping 多對(duì)一映射quantizer 量化器quantization noise 量化噪聲zeromean uniform process 零均值均勻過(guò)程uniform probability density function 均勻概率密度函數(shù)mean signal power 平均信號(hào)功率decibel 分貝，dBpeak signal power 峰值信號(hào)功率Unit 9 Wave Propagation and PolarizationMaxwell39。s Angle 布儒斯特角denominator 分母infinity 無(wú)限性roundtrip loss 往返損耗cavity 腔spectroscope 分光鏡prism 棱鏡collimated beam 準(zhǔn)直光束Total Internal Reflection 全內(nèi)反射、全反射critical angle 臨界角grazing incidence 掠入射surd 無(wú)理數(shù)imaginary 虛數(shù)evanescent field 瞬逝場(chǎng)Unit 10 LasersPart I acronym （首字母）縮寫amplification 放大stimulate 受激emission 發(fā)射radiation 輻射optical munication 光通信singlewavelength 單波長(zhǎng)molecular characteristics 分子特性parallel beam 平行光束coherent 相干high power 高功率kilowatt 千瓦milliwatt 兆瓦LE
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