ขนาดวิดีโอ: 1280 X 720853 X 480640 X 360
แสดงแผงควบคุมโปรแกรมเล่น
เล่นอัตโนมัติ
เล่นใหม่
Thank you for watching. I'm sorry about the noise. It seems to get better as the video progresses.
Very good lecture. But what is this background noise?
Thank you for watching. I'm sorry about the noise. It seems to get better as the video progresses.
Very good lecture. But what is this background noise?