Cov hlua xauv mechanism yog ib qho tseem ceeb uas tso cai rau cov qhov muag tsis pom kev tau tsa thiab txo qis tau yooj yim thiab nyab xeeb. Nws muaj cov cuab yeej siv hlau uas feem ntau zaum ntawm lub qhov muag sab saum toj ntawm qhov muag tsis pom. Lub xauv qaum yog tsim los tuav lub nqa hlua rau hauv qhov chaw thaum lub qhov muag tsis pom nyob rau hauv txoj haujlwm xav tau. Los ntawm rub tus hlua nqa, lub xauv qaum txuas thiab tuav lub hlua rau hauv qhov chaw, tiv thaiv cov qhov muag tsis pom kev. Cov txheej txheem no tso cai rau tus neeg siv txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nws nws nws cov txheej txheem tso cai rau tus neeg siv nws tso cai rau tus neeg siv kom kaw lub qhov muag kom pom tseeb thiab muab kev ceev ntiag tug. Txhawm rau tso cov hlua xauv, maj mam rub mus rau ntawm lub nqa hlua kom tso tawm cov txheej txheem, tso cai rau cov qhov muag tsis pom los yog txo qis raws li qhov xav tau.