 |
| |||
| 动索〔卷帆〕滑车; 带绳滑轮 | |||
| |||
| 活动滑车; 受力滑车; 动索滑车; 动滑轮; 带绳滑轮; 卷帆滑车 | |||
| fall-block: 6 phrases in 3 subjects |
| Drilling | 1 |
| Technology | 4 |
| Transport | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips