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1.1数学八年级上册同步练习：12.2.1三角形全等的判定SSS3

Transmission(mechanics)

Atransmissionorgearboxprovidesspeedandtorqueconversionsfromarotating

transmissionadaptstheoutputoftheinternalcombustionenginetothedrivewheels.

forstarting,stopping,andslowertravel.Thetransmissionreducesthehigherengine

needstobeadapted.

Often,atransmissionwillhavemultiplegearratios(orsimplygears),withthe

theoperator),orautomatically.Directional(forwardandreverse)controlmayalsobe

(andsometimesdirection)ofmotoroutput.

Inmotorvehicleapplications,thetransmissionwillgenerallybeconnectedtothe

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1.1数学八年级上册同步练习：12.2.1三角形全等的判定SSS3

exist.

Explanation

Earlytransmissionsincludedtheright-angledrivesandothergearinginwindmills,

todotheoppositeandprovideanincreaseinshaftspeedwithareductionoftorque.

transmitted.

Manytypicalautomobiletransmissionsincludetheabilitytoselectoneofseveral

usedtoslowdowntheoutputspeedoftheengineandincreasetorque.However,the

highestgearsmaybeoverdrivetypesthatincreasetheoutputspeed.

Uses

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1.1数学八年级上册同步练习：12.2.1三角形全等的判定SSS3

Gearboxeshavefounduseinawidevarietyofdifferent—often

stationary—applications,suchaswindturbines.

Transmissionsarealsousedinagricultural,industrial,construction,miningand

automotiveequipment.Inadditiontoordinarytransmissionequippedwithgears,such

drives.

Simple

Thesimplesttransmissions,oftencalledgearboxestoreflecttheirsimplicity

(althoughcomplexsystemsarealsocalledgearboxesinthevernacular),providegear

reduction(or,morerarely,anincreaseinspeed),sometimesinconjunctionwitha

or