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| 标准规则; 标准尺 (度) | |||
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standard rule : 4 phrases in 3 subjects |
| Business | 1 |
| Communications | 1 |
| Electronics | 2 |
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