watch English speech 关于手表的英文.ppt

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1、WatchZhangTaoSchoolofTextilesDon'tyouknowwatch?Awatchisasmalltimepieceintendedtobecarriedbyaperson.Awristwatchisdesignedtobewornonawrist,attachedbyawatchstrap.Itisdesignedtokeepworkingdespitethemotionscausedbytheperson'sactivities.腕表是由一个人佩戴的小的计时器,它的设计是通过表带戴在手腕上,目的是保持工作，而不受人的活动影响。Fu

2、nctions1Showtime显示时间2Personaladornment个人装饰品3Collectibleworksofart收藏品4Specificfunctions特定功能Classification1Mechanicalwatch（机械表）①Manualmechanicalwatches(手动机械表)Traditionalmechanicalwatchmovementsuseaspiralspringcalledamainspringasapowersource.Thespringmustberewoundperiodicallybytheuser

3、byturningthewatchcrown.Mostmodernwatchesaredesignedtorun40hoursonawindingandthusmustbewounddaily,butsomerunforseveraldaysandafewhave192-hourmainspringsandarewoundweekly.(传统的机械表机芯使用一个螺旋弹簧称为发条作为动力源。弹簧必须定期由用户通过转动表冠倒带。大多数现代腕表的设计每个绕组可运行40小时，因此必须每天上发条，但有些可运行几天或更长时间，并每周上发条便可。）Classificati

4、on②Automaticmechanicalwatch（自动机械表）Automaticmechanicalwatchisonethatrewindsthemainspringofamechanicalmovementbythenaturalmotionsofthewearer'sbody.Itusesaneccentricweight,calledawindingrotor,whichrotateswiththemovementofthewearer'swrist.Theback-and-forthmotionofthewindingrotorcouples

5、toaratchettowindthemainspringautomatically.Self-windingwatchesusuallycanalsobewoundmanuallytokeepthemrunningwhennotwornorifthewearer'swristmotionsareinadequate.（自动腕表由穿着者的身体的自然运动倒带机械机芯作为动力，它采用偏心重块，称为一个绕组转子，其与穿用者的腕的运动旋转，绕组转子耦合到背面的往复运动棘轮以自动缠绕主发条，自动上链腕表通常也可以手动上弦，来使手表正常运行，防止佩戴者不戴手表或者手腕运

6、动不足。）2Quartzwatch（石英表）Aquartzwatchusesanelectronicoscillatorthatisregulatedbyaquartzcrystaltokeeptime.Thiscrystaloscillatorcreatesasignalwithveryprecisefrequency,sothatquartzwatchesareatleastanorderofmagnitudemoreaccuratethanmechanicalwatches.Quartzwatchesusewatchbatterieswhicharev

7、erysmallandprovidetinyamountsofpowercontinuouslyforverylongperiods.(一个石英手表使用受石英晶体控制的电子振荡器来保持时间，这种晶体振荡器创建具有非常精确的信号频率，以使石英表比最好的机械表更精准，石英手表电池非常小，但续航时间很长。)Classification3Smartwatch(智能手表)Asmartwatchisacomputerizedwristwatchwithfunctionalitythatgoesbeyondtimekeeping.Manyrunmobileapps,usi

8、ngamobileoperatingsystem.S