Raws li tib neeg txoj kev nrhiav lub neej zoo ntxiv los txhim kho cov cuab yeej siv kom zoo, tab sis kuj yuav tsum tsis txhob muaj peev xwm ua tau zoo rau lawv cov tsev neeg muaj peev xwm ua tau zoo, tab sis kuj yuav zam tsis tau kev phom sij hauv tsev neeg
Kev tu ib txwm yog tus yuam sij rau kev kho noo noo {}}}}}}}}}} rau ultrasonic av ntub, nws raug pom zoo kom ntxuav lawv ntawm tsawg kawg ib zaug ib lub lim tiam, thaum huab cua ntshiab yuav tsum tau tu ntau dua .
Nws yog qhov tseem ceeb ib yam los hloov lub lim keeb . Lub taub lim dej yog ib feem ntawm cov xwm txheej ntawm lub taub lim dej tsis tu ncua thiab hloov nws tam sim ntawd yog tias koj pom ntxhiab tsw ntxhiab lossis xim hloov .
Thaum siv lub thoob noo, nws yog ib qho tseem ceeb kom xaiv cov dej xis {{} {} Nws tau pom zoo kom sawv ntsug rau lub sijhawm tsis muaj kev cuam tshuam rau kev ua kom tsis txhob muaj kev cuam tshuam rau.
Tsis tas li ntawd, txoj kev muab tso rau qhov tseeb yog ib feem ntawm kev txij nkawm {}} Lub pob zeb ncaj qha, tsis txhob muab tso rau saum phab ntsa lossis qhov chaw kub thiab txias rau sab hauv {}}
Los ntawm ua raws li cov txheej txheem kev tswj hwm saum toj no, koj tsis tuaj yeem tsuas yog nthuav tawm cov huab cua noo, tab sis kuj tseem ua kom muaj kev noj qab nyob zoo thoob plaws tsev thiab chaw haujlwm ib puag ncig {}}
