Tswb Teb Hluav Taws Xob
Ntim ntau dua85DB.
Kev Tuav Hom Xwm8".
Cov Lus Qhia Kev Nyab Xeeb
1) Cov khoom no tsis yog khoom ua si, thiab tsuas yog siv rau nws cov hom phiaj tsim .
2) Cov khoom no yog npaj rau kev siv thaum muaj xwm ceev .
3) Nco ntsoov tias cov khoom lag luam tau nyob ntawm pob ntseg vim yog 60dB max
tso zis ntawm 1m .
4) Yuav tsum paub txog cov khoom lag luam zoo ntawm cov khoom lag luam yog nce txog 35m .
5) Cov khoom no tsis yog siv rau kev siv los ntawm cov neeg (suav nrog cov menyuam) nrog
txo lub cev, cov kev xav thiab kev siv hlwb, lossis tsis muaj kev paub dhau los thiab
kev paub, tshwj tsis yog lawv tau muab kev saib xyuas lossis kev qhia txog
Kev siv cov khoom lag luam los ntawm cov neeg muaj lub luag haujlwm rau lawv txoj kev nyab xeeb .
6) Tawm hauv cov khoom sab nraud nthuav tawm huab cua, tshwj xeeb tshaj yog lub hnub, nag thiab
Ntsev cua, yuav ceev cov txheej txheem huab cua . qhov no tuaj yeem qeeb los ntawm kev tshem cov
cov khoom lag luam los ntawm cov xwm txheej no, lossis npog nws nrog cov npog uas haum .
7) huv si tsuas yog nrog daim ntaub ntub dej .}} Tsis Siv Cov Khoom Siv Tu Khoom Siv Zog
lossis cov khoom siv abrasive raws li cov no yuav ua rau cov khoom .
8) Tsis txhob nqa tawm ib qho kev hloov pauv lossis hloov kho rau cov khoom no .
Yam ntim
