 |
| |||
| indentation hardness | |||
| scratch hardness; scratching hardness | |||
| |||
| scratch hardness | |||
| 刻痕硬度: 12 phrases in 4 subjects |
| Aviation | 1 |
| Metallurgy | 4 |
| Plastics | 1 |
| Technology | 6 |
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