Kev daws teeb meem kev thov khoom siv txias uas loj hlob zuj zus

Raws li qhov kev thov thoob ntiaj teb rau cov khoom noj khov thiab cov khoom noj txias loj hlob tuaj, qhov xav tau kev xa khoom txias zoo kuj tseem ceeb zuj zus tuaj.lub raj xa dej rwb thaiv tsevua lub luag haujlwm tseem ceeb hauv kev tswj qhov kub thiab txias thaum lub sijhawm thauj cov khoom lwj.

Txo Kev Siv Hluav Taws Xob Hauv Cov Khoom Siv Txias

Los ntawm kev siv ib qholub tshuab nqus tsev vacuum, cov tuam txhab tuaj yeem tiv thaiv kom tsis txhob muaj cua sov nkag mus rau hauv lub kaw lus, ua kom cov khoom noj tseem khov lossis txias thoob plaws hauv cov txheej txheem xa khoom. Lub peev xwm no txo ​​​​​​kev siv hluav taws xob thiab pab cov tuam txhab ua tiav cov hom phiaj kev ruaj khov.

Cov Ntawv Thov Hauv Cov Huab Cua Nyuaj Siab

Nyob rau hauv cov cheeb tsam uas muaj huab cua phem heev,Cov kav dej VJyog cov khoom tseem ceeb hauv kev khaws cia cov saw hlau txias, txo cov khoom noj pov tseg. Cov thev naus laus zis no tau txais kev siv dav hauv kev lag luam khoom noj vim yog kev lees paub zoo thiab kev tiv thaiv ib puag ncig.