用英语翻译一段话：说明如何绘制实验曲线

Explainhowtodrawtheexperimentalcurves.

Theadvantageofusingfiguretoexpressionexperimentaldataisclearly,easytocompare,andeasytoseetheextremevaluepointandturningpoint,periodicrateandotherpropertiesinthedata.

Thefirststepinexperimentaldatasortingistabulation.Whentabulatingweshouldmakecleartherelevancebetweenthedata,andknowwhatisindependentvariable,whatisdependentvariable.Whenthedateweneededcannotbesearchedoutfromchart,wecanuseinterpolationmethod，linearinterpolationmethodisthesimplest.Weshouldbecarefultouseextrapolationmethod.Voluntarylyextrapolatingcanbeunreliableifwedon'tmasterthelawfordatachanging.

Thesecondstepistobuildcoordinatesystem.Abscissa(x)expressionindependentvariable,ordinate(y)expressiondependentvariable.Originofcoordinatesmaynotbezero,itdependsonparticularcase.Coordinatesindexingshouldconformtotheeffectivenumberoftheexperimentdata,namelytheeffectivedigitalreadoutscoordinatesoftheexperimentalcurvesshouldbeidenticalwiththedigitofexperimentaldata.Afterconsideringabove,thefigurecouldexpresscorrectlyfunctionalrelationbetweenxandy.

Thethirdstepismarkingthedateofthecharttocorrespondingcoordinatesystem.Whenconnectingeachdiscretepointintosmoothcurve,weshouldgetthroughmoreexperimentalpointasfaraspossible,ormakethepointoutsideclosetothecurveandequalizethenumberofpointsonbothsidesofcurve.Inordertoassessthequalityofthecurve,weshouldcalculatemean-squareerrorofexperimentaldata,thesmaller,thehigherqualityofthecurve.

累死我了查了好久...不是2楼的机器翻译，觉得可以的话请采纳，谢谢.

最好加点分~~~