Kev muab siab ruaj khov heev, kev ua haujlwm raug, lub tshuab cua txias laser txiav tshwj xeeb

Kev ua haujlwm suab qis, txhim kho qhov chaw ua haujlwm: Tag nrho lub tshuab siv lub suab rwb thaiv tsev thiab txo suab nrov, nrog lub suab ua haujlwm qis dua 70 decibels. Nws yog qhov tsim nyog rau cov chaw muaj suab nrov xws li tsev kho mob, chaw soj nstuam, thiab tsev kawm ntawv, tsim kom muaj kev tsim khoom ntsiag to thiab xis nyob lossis kev sim.

Tsim lub neej ntev, txhim khu kev qha thiab ruaj khov: Cov khoom tseem ceeb siv cov khoom siv uas tsis yooj yim hnav thiab tsim qauv zoo, nrog rau lub neej ua haujlwm ntawm lub tshuab tseem ceeb txog kaum txhiab teev. Nws yog qhov tsim nyog rau kev ua haujlwm tas mus li ntawm cov xwm txheej kev lag luam, xws li kev tsim tsheb thiab kev ua hlau, txo cov khoom siv tsis ua haujlwm thiab lub sijhawm tsis ua haujlwm.