mus saib 1

Vim li cas kev lag luam ci xaiv ultrasonic txiav riam

Ultrasonic txiav yog lub tshuab txiav zaub mov tshiab uas ua kom muaj txiaj ntsig ntau ntxiv thiab zoo tshaj plaws ntawm cov khoom noj khoom haus. Ultrasound yog ib qho kev vibration zoo ib yam li cov khoom siv suab paj nruag. Lawv raug hu ua ultrasound vim tias lawv cov zaus siab tshaj qhov kev hnov ​​​​lus ntawm tib neeg pob ntseg (ntau dua 16 kHz). Hauv acoustic sib dhos, […]

Nyeem ntxiv »

Xa koj cov lus nug hnub no