millimeter [mm] - 单位转换器

Reference Pixel 单位转换器 轻松转换度量单位 xTranslatorsCafe.com在线单位转换器常用力学热量流体声音光电气磁学辐射其它Calculators手机浏览版本 Chinese(Simplified,China) Randomconverter 转换pixel(X)millimeter[mm] 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1pixel(X)=0.264583333333334millimeter[mm]由：twipmetercentimetermillimetercharacter(X)character(Y)pixel(X)pixel(Y)inchpica(computer)pica(printer’s)point(DTP/PostScript)point(computer)point(printer’s)enciceroemDidotpoint至：twipmetercentimetermillimetercharacter(X)character(Y)pixel(X)pixel(Y)inchpica(computer)pica(printer’s)point(DTP/PostScript)point(computer)point(printer’s)enciceroemDidotpoint TCTermsQuestionsandAnswers—expertadvicefortranslatorsontoughterminologyMoreaboutTypographyandDigitalImagingUnitsOverviewDefinitionsofUnitsDifferentUnitsComputerPicaReferencePixelVisualAngleOtherUnitsEmandEnCritiqueLearntechnicalEnglishwiththisvideo!OverviewSerifandsans-seriffontsTypography,thestudyoftype,isconcernedwiththeappearanceofletters,includingtheirshape,size,andcolor.Itemergedaroundtheinventionoftheprintingpressinthemid-fifteenthcentury.Arranginglettersonthepagewellandfollowingtheprinciplesofgoodtypographycanimpactthereaderandstrengthenthemessagethatthedesigneristryingtoconvey.Badtypography,ontheotherhand,canmakethetextdifficulttoread.Fontsareclassifiedintodifferenttypes,suchasserifs(fontswithdecorativeelementsnamedserifs)andsansserifs(fontswithoutserifs).Intheillustration,thefirstletterinblueisinaseriffont,Bodoni.Hereoneofthefourserifsismarkedinred.Theotherletterinyellowisinasans-seriffont,Futura.Otherclassificationsdividefontsbasedontheirhistoricorigins:theoldstyleoroldfaceincludestheoldestfonts;transitionaltypesaretheonesthathistoricallyfollowedtheoldestones;moderntypesarefontsthatweredesignedafterthetransitionaltypesanduntilaboutthe1820s;andmoderntypesormodernizedold-styletypesincludemodernfontsthatimitatethetrueoldstylebutaredesignedinthemoderntimes.Therearealsoothergroupsinthisclassification.Eachgroupoffontsdiffersinseveraldesignelementssuchasintheirthickness,contrastbetweenthickandthinlines,andtheshapeoftheserifs.Otherclassificationsalsoexist.AscreenshotofAdobeInDesign—adesktoppublishingapplicationproducedbyAdobeSystems.Typographyisconcernedwithmanipulatingsizeandfonttypestomakepageswithapleasingandeasy-to-readappearance.Thereareseveralconventionsforspecifyingthesizeofletters.Forsomeoftheseconventions,thesamesizeoflettersintwodifferentfontsmaynotmeanthattheyhavethesamelineardimensions,asdescribedbelow.Despitetheseinconsistencies,sizedoeshelpdesignerstoknowhowmuchspaceagiventexttakesuponapage,andassuchisausefulmeasureindesktoppublishing.Digitalimagesarealsomeasuredindesktoppublishing,toensurethattheyfitwellintheallottedspace.Whilecentimetersorinchescanbeemployed,unitscalledpixelsarealsoused.Eachpixelrepresentsadot(orasquare)thatmakesupanimageonthescreen.DefinitionsofUnitsIntypography,thesizeoflettersandcharactersismeasuredwiththehelpofabasicstandardizedunit,pica(pc).Sometimespicaisuseddirectly,forexample,tomeasuremarginsandcolumnsizes.However,ofteninsteadofpica,theunitsderivedfromit,suchaspoints,areused.Thereareseveralconventionsforcalculatingpica.Thesizeofthelettersismeasuredusingthefollowingdimensions(pictured):Fontmetrics.1.ascenderline,2.meanline,3.baseline,4.descenderline,5.x-height,6.bodysizeascenderline:marksthetopoftheletter;meanline:topofthemainbodyoftheletter,thisisalsoknownasmedian;baseline:bottomofthemainbodyoftheletter;descenderline:marksthebottomoftheletter;x-height:thesizeofthemainbodyoftheletter,traditionallyitisequaltotheheightoftheletterx;bodysize:thesizeoftheleadblockthatwashistoricallyusedforprintingeachletter.TheheightofthestampisanexampleofbodysizePoints(pt)aretheunitsconventionallyusedtodeterminethesizeofthefont.Forexample,muchoftheacademicwritingandbusinesscorrespondenceisdoneinsizesbetweenpoint10andpoint12.Thevalueofonepointisequalto1/12ofapica.Theactualsizeininchesormillimetersreferstothevaluecalledbodysize,undernumber6intheillustration.Historicallythisisthephysicalheightoftheleadblockusedforprintingwiththeprintingpress—ithasasingleletteronit.Tovisualizethis,imagineastampwithoneletteronit—thepointsizewouldbenotthesizeoftheletter,butthephysicalheightofthestamp.Inwebdevelopment,inparticular,inLaTeXandCSS,x-heightissometimesusedinsteadofpoints.Pixels(px)aretheunitsformeasuringthesizeofdigitalimages.Seethedescriptionofthepixelbelow.DifferentUnitsThereareseveraldifferentconventionsusedtocalculatethelengthofonepica.Astheprintingtechnologydevelopedsomewhatindependentlyindifferentcountries,sodidthetypographicunits.Theywerecommonlybasedonthelocalunitsoflength,andevenincaseswhenpicaistiedtotheinch,itsvaluediffersdependingonthehistoricaldefinitionoftheinchinagivencountry.Themostcommonlyusedcomputerpicawasdevelopedtoanswertheneedforstandardizationacrosscountries.ComputerPicaComputerpicaismeasuredas1/6ofaninch.Pointsaregenerallyderivedfrompicaasdescribedabove.PostScriptisoneoftheformatsthatusecomputertypographyunits.Theseunitsareusedbymostcomputersformeasuringtextdisplayedonthescreenandforhomeprinting.Insomecasesinwebdesign,pointscanbedefinedbasedonthephysicalmeasurementsofpicarelevanttounitsoflength(forexample,inches,asoutlinedabove).However,bothpointsandpicascanalsobedefinedrelativetothesizeofapixel,asdefinedbyaparticularwebsite.Inthiscase,thispixeliscalledareferencepixel.ReferencePixelStandardpixelsaresubstitutedbyreferencepixelswhenthetargetaudienceusesdevicesthatareviewedfromunusualdistancesorthathavescreensofunconventionalsizes.Forexample,thedisplayofmostsmartphonesassumesthattheviewersuseitatadistanceofabout10inchesfromtheeyes(25.4cm),butifanewsmartphoneisdevelopedwiththesamescreensizeasmostphonesaretoday,butthatismeanttobeviewedat5inches(12.7cm)distanceinstead,thenthereferencepixelshouldbeabouthalfofthesizeoftheconventionalpixel,toensurethatallthecharactersaredisplayedwellanddonotappearchoppyorpixelated.VisualAnglePeoplelongnoticedthecorrelationbetweenthesevalues:thesizeofthescreen,thedistancefromthescreen,thesizeofapixel,andhowbigthispixelappearstothehumaneye.Torelatealloftheminaneasy-to-understandway,theconceptsofvisualangleandPixelsPerDegreewereintroduced.AnexampleofPixelsPerDegree(pixelsalignedalongthelinesEandF),andavisualangle(angleA)ThevariablePixelsPerDegree(PPD)representsthetotalnumberofpixelsthatonewantstoappearonthescreenperagivendistanceformedbytheviewingangleofonedegree.Intheillustration,theyellowangleDisonedegree(itisnotactuallyonedegreeinthispicturebecauseitwouldbehardtoseethediagramwithsuchasmallangle,butpleaseimaginethatitis).PPDisthenumberofpixelsthatcanbelinedupalongtheredlineEandalsoalongtheredlineF.Inourcase,PPDisthreepixels(twogreyandonedarkgrey).DisplaymanufacturersusuallycalculatethePPDsothatthepixelsaresmallenoughtoblendinandtoproduceacontinuousimage.Itisusuallymuchhigherthaninourillustration.Apple,forexample,claimstokeepthePPDfortheirdisplaysnolowerthan53.53,sometimesashighas79PPD.KnowingthePPDonecancalculatethesizeofonepixelbyusingthedistancefromtheeyetothedisplayandthevisualangle.Inourexample,thedistancesare10and20inches—theapproximatedistancesforasmartphoneandacomputerdisplayrespectively.Thevisualangleistheangleatwhichthedistancethatiscoveredwithinthisangleonthescreencoversonepixel(greenlinesBandContheillustration).Intheillustration,thevisualangleismarkedinorange.Usingthesetools,wecaneasilycalculatepixelsizesnotonlyforstandarddisplaysbutalsoforthosethatareviewedatunusualdistancesorareofunusualsizes.Ifyouareinterestedtoknowmore,youcanfindmoreinformationontheW3Cwebsite. OtherUnitsOthertypographyunitsareusedintheindustry,althoughmuchlesscommonly.Americanpicaisoneofthem.Itisabout0.166ofaninch.Theprinter’spicaismeasuredthesameway.Cicerostillappearsinliteratureoccasionally.ItwasaunitcommonlyusedinContinentalEuropeuntilpicawasintroduced.Itiscalculatedas1/6ofaFrenchinch.Frenchinchesaredifferentfromtheinchescurrentlyinuse.Oneciceroequals4.512mmor0.177moderninches.Itisverysimilartothecomputerpicaandisequaltoabout1.06computerpicas.EmandEnWhiletheunitsoutlinedabovemainlydenotetheheightofeachletter,emandenaretwotypographicunitsthatmeasurethewidthofletters.Emequalsthesizeofthecharacterinpoints,whileenishalfofanem.Historically,thesizeofemwasdefinedasthewidthofthecapitalletterM.Thisisnotanaccuratedefinitionanymore,becauseMisdifferentforthenumerousfontsthatareinusetoday.Emandenareoftenusedtomeasurethelengthofdashes.InEnglish,thedashthatisusedtoindicatetherange(e.g.“use3–4tablespoonsofsugar”)iscalledtheendash,whilethelongerdashusedinpunctuation(e.g.“thesummerwasshort,butthewinter—long”)iscalledtheemdash.Indentationandcolumnwidthcanalsobemeasuredintheseunits.CritiqueManydesignersarguethatthecurrentlyusedtypographicsystemsbasedonpicasandpointsarefarfromideal.Critiqueincludesproblemsthatarisefromhavingtousethissysteminconjunctionwiththemetricortheimperialunitsthatdesignersuseforimagesandpagesizes,etc.—thisisaproblembecausethetypographicunitsystemisnottiedaccuratelytothemetricortheimperialunits.Allthreewordsarewrittenwiththesamesizeinpoints,yettheirx-heightisverydifferentbecausedifferentfontsareusedforthemAnotherproblemisthatthelettersofthesamepointsizebutfromdifferentfontsappeartohavedifferentsizes.Thisisbecausethesizeexpressedinpointscorrespondstothebodysize,nottothesizeofthebodyoftheletter,whichisthex-heightontheillustrationabove.Thismakesitdifficultforthedesignertokeepconsistencythroughoutthedocument.Forexample,intheillustration,allthreewordsarewrittenwiththesamesizeinpoints,yettheirx-heightisverydifferentbecausedifferentfontsareusedforthem.Somedesignersproposetousethex-heightasthefontsizeandtostopusingthebodysizetoaddressthisissue.References本篇文章由KaterynaYuri撰写你可能对其它转换器组的其它转换器感兴趣：MetricPrefixesConverterDataTransferConverterLumberVolumeMeasuresConverterCurrencyExchangeRatesMen’sClothingandShoeSizesWomen’sClothingandShoeSizes简约版计算器完整版计算器单位定义在线单位转换器其它转换器你在翻译测量单位时遇到困难？帮助在此！在TC术语帮助贴出你的问题，几分钟就能得到资深技术翻译的解答。

其它转换器数据传输速度度量单位、木材体积度量单位以及印刷和数字成像领域度量单位的转换器。

公制前缀与化合物摩尔质量计算器的说明。

TypographyandDigitalImagingUnitsConverterIntypography,apoint(pt)isthesmallestunitofmeasure,beingasubdivisionofthelargerpica.Thepointhaslongbeentheusualunitformeasuringfontsizeanddistancebetweenlinesoftextandothersmallitemsonaprintedpage.1pointisequalto0.35to0.38mmdependingonthecountry.Inthelate1980s—thebeginningofthe1990sthetraditionalpointwasreplacedbythedesktoppublishingpoint(alsocalledthePostScriptpoint),whichwasdefinedas1⁄72ofaninch(25.4⁄72mm=0.3527mm).Twelvepointsmakeupapica,sixpicasmakeaninch.AciceroisaunitofmeasurethatwasusedintraditionaltypographyinItaly,France,andothercontinentalEuropeancountries.1cicero=12points.Itisnotusedinmoderndesktoppublishingsystems.Apicaisatypographicunitofmeasurecorrespondingto1/72ofafootor1/6ofaninch.Thepicacontains12pointunitsofmeasure.ThecontemporarypicausedinDTPsystemslikeAdobeInDesignandearlierinAldusPagemakeris1/72ofafoot,i.e.4.233mmor0.166in.Atwip,whichmeans“twentiethofapoint”isatypographicalmeasurement,definedas1/20ofatypographicalpoint.Onetwipis1/1440inchor17.639µmwhenderivedfromthePostScriptpointat72totheinch,and1/1445.4inchor17.573µmbasedontheprinter’spointat72.27totheinch.Indigitalimaging,apixel(shortforapictureelement)isaphysicalpointinarasterimage,orthesmallest,addressableelementinadisplaydevice.Inotherwords,apixelisasinglepointinapicture.Onthemonitorofacomputer,apixelisusuallyarectangle.使用TypographyandDigitalImagingUnitsConverter转换器本在线单位转换器允许不同系统之间众多度量单位进行快速、精确的转换。

单位转换器页面服务于工程师、译员以及任何工作中涉及不同单位测量值的其它人士。

观看视频，学习科技英语！你可以使用本在线转换器76大类的数百个单位，几千个单位对。

这些类别包括加速度、面积、电气、能量、力、长度、光、重量、质量流量、密度、比容、功率、压力、应力、温度、时间、扭矩、速度、粘度、体积和容量、容积流量等。

注：整数（不带小数点或指数符号的数字）精确到15位数，而小数点后面最多保留10位数。

在此计算器中，符号E表示太小或太大的数字。

符号E是科学记数法a•10x的另一种格式。

例如：1,103,000=1.103•106=1.103E+6，这里E（指数）代表“•10^”，即“乘以10的次方”。

符号E常见于计算器中，使用人群为科学家、数学家以及工程师。

在左边的列表框内选择原单位。

在右边的列表框内选择目标单位。

在左边的由框内输入一个值（如“15”）。

转换结果就会出现在结果框内以及至框内。

或者，你也可以在右边的至框内输入该值，然后读取由框内以及结果框内的转换结果。

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