Nrog rau txoj kev loj hlob ntawm kev tshawb fawb thiab thev naus laus zis thiab kev sib nrig sib nkag siab ntawm cov txuj ci kev lag luam, ultrasonic tshuab tsis yog tsuas yog siv dav hauv engineering, machinery, electronics, chemical industry, biology, kev kho mob thiab lwm yam kev lag luam, tab sis kuj plays lub luag haujlwm loj hauv lub neej txhua hnub.Kuv ntseeg tias ev...
Nyeem ntxiv