Peb mus rau ib qho kev tshaj tawm exhibition thiab taug kev ib pliag. Peb tau kuaj xyuas tag nrho cov cuab yeej thiab tau tawg tawm los ntawm cov khoom siv laser li niaj hnub no. Daim ntawv thov ntawm laser technology yog incredibly nws kim heev. Peb tuaj hla ib daim ntawv hlau laser txiav tshuab. Kuv cov phooj ywg nug kuv tshaj plaws txog lub thawv dawb no: "Nws yog dab tsi? Vim li cas nws muab tso rau ntawm lub tshuab txiav?" "Qhov no yog ibchiller rau txias cov khoom siv fiber ntau laser txiav. Nrog rau nws, cov tshuab laser no tuaj yeem ua kom ruaj khov lawv cov kab hluav taws xob thiab txiav tawm cov qauv zoo nkauj no." Tom qab kawm txog nws, kuv cov phooj ywg tau zoo siab heev: "Muaj ntau qhov kev txhawb nqa tom qab cov tshuab zoo heev."