Close up we see pistons move up and down or side to side. Pendulums sway, the small parts of machinery move. Gears drive larger wheels. Gears within gears spin. Shafts turn some mechanism
Close up we see pistons move up and down or side to side. Pendulums sway, the small parts of machinery move. Gears drive larger wheels. Gears within gears spin. Shafts turn some mechanism
1080P
| 名称 | 下载 | 大小 | 发布于 |
|---|---|---|---|
| Mechanical Principles 1931 1080p BluRay x264-BiPOLAR | 891MB | 4 年前 |
720P
| 名称 | 下载 | 大小 | 发布于 |
|---|---|---|---|
| Mechanical Principles 1931 720p BluRay x264-BiPOLAR | 492MB | 4 年前 |
