[email protected]
+91-9920808017
0. Frequency of ultrasound is
< 20 Hz.
> 20 Hz and < 20000 Hz.
20000 Hz.
> 20000 Hz.
Your email address will not be published. Required fields are marked *
Report
Name
Email
Website
Save my name, email, and website in this browser for the next time I comment.
Comment
Login with Facebook
Login with Google