 |
| |||
| functional substance A substance from the point of view of its function or purpose, for example a painting agent or a preserving substance (从功能或目的角度出发的有用的物质。例如涂料或储藏物。) | |||
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