测绘工程专业英语作文

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1、测绘工程专业英语作文篇一：测绘工程专业英语课文翻译Unit9BasicStatisticalAnalysisofRandomErrors（随机误差的统计学基本分析）Randomerrorsarethosevariablesthatremainaftermistakesaredetectedandeliminatedandallsystematicerrorshavebeenremovedorcorrectedfromthemeasuredvalues.【eliminate】后，并且所有系统误差被从测量值中移除或修正后，保留下的那些变量【variab

2、le变量、变化n.】）Theyarebeyondthecontroloftheobserver.Sotherandomerrorsareerrorstheoccurrenceofwhichdoesnotfollowadeterministicpattern.确定性的】模式【pattern】而发生的误差）Inmathematicalstatistics,theyareconsideredasstochasticvariables,anddespitetheirirregularbehavior,thestudyofrandomerrorsinanyw

3、ell-conductedmeasuringprocessorexperimenthasindicatedthatrandomerrorsfollowthefollowingempiricalrules:【mathematicalstatistics】中，它们被当成随机变量【stochasticvariable】，尽管它们的行为无规律，在任一正确的【well-conducted原意为品行端正的，这里指测量实验和活动是无误的】测量活动和实验中，对的随机误差的研究显示【indicate】随机误差遵循以下经验法则【empirical⑴Arandomerr

4、orwillnotexceedacertainamount.（随即误差不会超过一个确定的值）⑵Positiveandnegativerandomerrorsmayoccuratthesamefrequency.（正负误差出现的频率相同）⑶Errorsthataresmallinmagnitudearemorelikelytooccurthanthosethatarelargerinmagnitude.比数值大的误差出现可能性大【belikelyto可能】）⑷Themeanofrandomerrorstendstozeroasthesamplesiz

5、etendstoinfinite.随机误差的平均值趋近于0）Inmathematicalstatistics,randomerrorsfollowstatisticalbehaviorallawssuchasthelawsofprobability.【statistical】行为【behavioral行为的】规律，如概率法则）Acharacteristictheoreticalpatternoferrordistributionoccursuponanalysisofalargenumberofrepeatedmeasurementsofaquan

6、tity,whichconformtonormalorGaussiandistribution.观测分析【analysisn.】中的误差分布的一个特征理论模式，遵照【conformto遵照】正态或高斯分布）【在对一个量进行大量重复观测分析后，得到一个误差分布的理论特征——正态或高斯分布】Theplotoferrorsizesversusprobabilitieswouldapproachasmoothcurveofthecharacteristicbell-shape.与……相对】概率的关系图，接近一条光滑的特有的【characteristic特有

7、的】钟形曲线。）Thiscurveisknownasthenormalerrordistributioncurve.称为正态分布曲线）Itisalsocalledtheprobabilitydensityfunctionofanormalrandomvariable.【probabilitydensity】函数）Itisimportanttonoticethatthetotalareaoftheverticalbarsforeachplotequals1.Thisistruenomatterthevalueofn(thenumberofsingle

8、combinedmeasurements),andthustheareaunderthesmoothnormalerror