Yam kev cai dab tsi ua rau lub teeb blackboard feem ntau xav tau kom ua tau raws li?
Thaum muas blackboard teeb, tib neeg ib txwm mob siab rau yuav cov khoom zoo tshaj plaws nrog cov nyiaj tsawg kawg nkaus. Qhov tseeb, txhua yam teeb pom kev zoo tau tshwm sim nyob ib puag ncig txhua tus, thiab tib neeg tsis muaj kev lag luam ntau, tab sis ib yam yog qhov tseeb, cov teeb pom kev ua haujlwm blackboard yog destined kom ua tau raws li cov hauv qab no.
Ua ntej tshaj plaws, hom khoom no tsis tuaj yeem siv ntau qhov chaw. Ntawm tag nrho, nws yog qhov me me thiab me me. Nws feem ntau yog siv rau pem hauv ntej ntawm lub blackboard. Tsis hais lub caij twg los yog lub sij hawm twg, nws yuav yog Qhov tshwm sim ntawm kev xav yuav cuam tshuam rau tib neeg' kev kawm tau zoo. Yog tias qhov teeb meem zoo li no tshwm sim, ces lub teeb tuaj yeem qhib rau lub sijhawm. Ua li no, cov lus ntawm daim ntawv dub tuaj yeem pom meej.
Blackboard teeb
Yam kev cai dab tsi uas lub teeb blackboard feem ntau xav tau kom ua tau raws li? Tom qab ib lub sij hawm ntawm kev nkag siab, kuv pom tias hom ntawm lub teeb blackboard no muaj lub teeb pom kev zoo. Tej zaum tib neeg tsis paub ntau txog qhov teeb pom kev zoo. Niaj hnub no, ntau lub koom haum muaj cai patent rau qhov kev hwm no, thiab tsuas yog lawv tus kheej nkaus xwb lub tsev kawm ntawv tsuas yog tuaj yeem tsim cov teeb pom kev zoo, thiab qhov ci ntsa iab ntawm cov teeb pom kev zoo no yuav tsis ua rau tib neeg qhov muag puas tsuaj. Txawm hais tias lawv nyob hauv ib puag ncig zoo li no tau ntev, lawv yuav tsis ua rau qhov muag nkees.
Nyob rau hauv qhov tseeb, rau lub blackboard teeb, kev tswj ntawm lub teeb qhov chaw yog ib txwm tseem ceeb tshaj plaws, thiab qhov no tau dhau los ua nws qhov tseem ceeb tshaj plaws feature. Yam tsawg kawg ntawm cov txheej txheem ntawm kev tsim lub teeb ci yog qhov nyuaj dua. Nws yog tsim nyog los xyuas kom meej stability ntawm lub brightness. Tau kawg, nws yuav tsum tsis txhob dazzling dhau lawm, txwv tsis pub nws yuav cuam tshuam rau koj txoj kev kawm thiab kev ua haujlwm, yog li qhov no yog qhov loj tshaj plaws uas nws muaj.
