0 seconds
0 seconds
Copy embed code
Picture in Picture
Keyboard shortcuts
TAP TO UNMUTE
0:00
Play(k, Space)
Mute (m)
0%
0:00
/
0:00
Loop: Off
Autoplay is on
Playback settings
Playback speed
Normal
0.25x
0.5x
0.75x
Normal
1.25x
1.5x
1.75x
2x
Quality
Auto
Auto
Advanced
Use native captions
Fullscreen(f)
飛機起落架是如何制造的？制造出一個新起落架，需耗時6到8個月
Video Views
Dec 11, 2023
科普大师
Follow
Annual Plan Holiday Offer
30% Off
Save 30%
Limited-time
Only $58/year
Get Offer
