科技英语单词

第一章随机过程

toss a die

be at liberaty to do sth./be free to

1 time out of 6/（1/6）of the dice

sample function/probability density function/autocorrelation fuction/delta funtion

Parseval’s/shannon theorem

Hartley-Shannon law

energy /power spectral density/spectral range

the upper-frequency limit/lower bound/upper limit

truncate截短，截断/cutoff截止/smooth tone transition过渡，转变/span 横跨，跨越

intuitive/intuitively直觉的/直觉地

in an attempt to…为了…

it can be argued that…我们可以证明…

we observe that…我们发现

we recall that…，and identifying…as…，we find that…我们回想一下有…，然后定义…，最终我们发现…

deterministic确定性的

heuristic启发式的，渐进的

complementary互补的/compact/brief紧凑的；简洁的

implement使用/perform实施/exploit使用/employ使用/exploitation剥削/impractical无法实现的/suited to适用于

successive/continuous连续的/discrete离散的/disperse/distribute分散，散开/discrete level离散电平

analogously类似地/correspondingly与之相关联的/specifically具体说来/hereafter今后，从此以后/basically就是/broadly大致上

neighboring samples相邻样品/adjacent cells相邻小区

procedure方法/in this technique技术/process方法/method

equation式子，公式/expression表达式/formula公式，秘方/identity恒等式definition定义/theorem定理/law定律/axiom公理

a negative statement of/associated with……/negative theorem逆定理conceptually概念地/outline/synthesis部分/synopsis/conspectus提纲，要点，概要/reliably可靠地/reasonably相当地/appreciable相当的

/selectively有选择地

collection/ensemble集合，集/subset子集/specimen/example/instance例子interval/separation/spacing/gap间隔，距离

variable变量/variation动态范围/argument自变量；辐角

margin余量；容限

facorization因式分解

time invariant时不变的

statistical average统计平均值

root-mean-square 均方根/zero-mean 零均值

covariance协方差

uncorrelated不相关的

stationary平稳的

ergodic各态历经的

uniform/even均匀的，一致的/ normalized energy归一化能量

performance性能/properties特性/characteristics/specifications特性，特征/availability可用性/nature/intrinsic

operation运算；设备/operator算子，接线员

product乘积

quotient商，系数，份额/ratio to除以/divided by除以

convolved with 卷积

sum和/be appended to

subtraction减法

derivative导数

differential微分，差分/differentiate求微分/differences偏差，差异integral积分/integrate积分/integer整数/rational number有理数/real number/imaginary number实虚数

Q有理数（quotient）Z整数（zahlen（德））N自然数（natural）C复数（complex）R实数（real）

in proportional to 正比于

第二章信道容量

be something of

M-ary

trinal三倍的，三重的

binary/ternary/quaternary/hexadecimal/16 band 16进制/mudulo-2 adder

模二加法器

the number of levels级数/stage级

bandlimited gaussian channel带限高斯信道/lowpass/highpass

amount of information/information content/quantity of

information/information quantity信息量

resistor电阻/resistence电阻值

capacitor/capacitence

inductor/inductence

attenuate衰减，使衰减/small gradual changes缓慢变化/a slight variance 小变化方差

antenna天线/antenne

distort失真，使失真

quantize量化/quantization/quantizor量化器/quantum量，定量

equalizer均衡器

signal-to-noise ratio信噪比

bit error rate

encompass/house/consist of包括，包含

allow允许

compres压缩/compand压缩扩展/expand扩展/expandor/compandor/compressor/companding/compression

impress施加

complication复杂化/contamination污染，污染物/combination组合/component分量

whereby/thereby由此/vice versa反之亦然/remain the same

override盖过/exceed超过/overwhelm淹没，覆盖/combat战胜/suppress压制devise发明/derivation/deduction推导，导出/contemplate预期，预料/presumed假定的，推测的/visualize设想/treatment论述，分析

eduction减少，缩小/deduce/decrease/lower

formidable困难的，棘手的

sophisticated复杂的，精于世故的/cynical世故的

rounding四舍五入/round off近似到

trade off交换/switching/take on形成/convert转化/transform变换/handoff 切换

第三章脉冲编码调制基础