Размер видео: 1280 X 720853 X 480640 X 360
Показать панель управления
Автовоспроизведение
Автоповтор
Good afternoon Dr please help me with the different categories of water parameters that is physical,chemical and biological
Very helpful. Thanks
Good job well done. Thank you.
very helpful, thank you!
I love this class
I have a question! If a water treatment plant ! Has nice numbers. But. When you pour hotwater into a milk container ! And the water starts to fizzle ! After it sitting still for 20 seconds.!!
Thank you
Good afternoon Dr please help me with the different categories of water parameters that is physical,chemical and biological
Very helpful. Thanks
Good job well done. Thank you.
very helpful, thank you!
I love this class
I have a question!
If a water treatment plant ! Has nice numbers.
But. When you pour hotwater into a milk container ! And the water starts to fizzle ! After it sitting still for 20 seconds.!!
Thank you