(1) Thaum no B-ultrasound tsis siv, peb yuav tsum ntim thiab ntim lawv tag nrho ua ntej khaws cia. Peb cov khoom yog txhua lub aluminium alloy thawv, yog li peb tuaj yeem tso B-ultrasound rau hauv lub thawv kom yooj yim huv thiab khaws cia.
(2) Tso lub thawv ntim nrog B-ultrasound rau kev siv kho tsiaj nyob rau hauv qhov chaw qhuav
