August 2022 0 0 Report
Какую частоту могут иметь звуковые колебания : 10 Гц,30 Гц,100 Гц,15 кГц,40 кГц,150 кГц ?
Please enter comments
Please enter your name.
Please enter the correct email address.
You must agree before submitting.

Copyright © 2024 SCHOLAR.TIPS - All rights reserved.