Dab tsi yog nqa nqa?

Dab tsi yog qib sib xws ntawm of the elevator, peb tau txais txiaj ntsig ntau, of elevator yooj yim nyob rau hauv luv luv yuav ua li cas yog nqa qhov siab thiab qhov siab ntawm cov haujlwm hauv tsev, kev sib xyaw ntawm of elevator siv zaus tsis muaj teeb meem, peb yuav tsum nyob rau lub sijhawm ntawm yuav khoom ntawm of elevator. raws li qhov siab ua haujlwm qhov siab thiab qhov thauj khoom tiag tiag, yog tias qhov zaus loj dhau, peb xav kom xaiv los xaiv cov lus qhia nqa lossis shear diav rawg lifter, qhov siab tshaj plaws thauj khoom rau shear fork lifter tuaj yeem ua tiav 100 tons, zoo daws cov teeb meem ntawm qhov hnyav, yog tias siv zaus loj dhau lawm, qhov siab yog siab dua, peb pom zoo siv of elevator phau ntawv qhia kev tsheb nqaj hlau hom, Hom no nqa dua kev ua haujlwm siab ntau tsis ua haujlwm tsis dhau, daws qhov teeb meem thiab siv zaus yog qhov kev daws teeb meem zoo rau cov teeb meem ntawm cov nqa txuam teeb.