 |
| |||
| 标准物质材料 | |||
| 参考资料 | |||
| 参考材料 | |||
| 标准样品; 基准物质 | |||
| 标准试样 | |||
| 标准物质 | |||
| 参比物质; 标准材料; 基准材料 | |||
| 参考物质 | |||
| reference material: 22 phrases in 8 subjects |
| Aviation | 4 |
| Chemistry | 3 |
| Earth sciences | 3 |
| Electronics | 2 |
| Geophysics | 1 |
| Space | 4 |
| Technology | 4 |
| United Nations | 1 |
|
| |||
| 标准物质材料 | |||
| 参考资料 | |||
| 参考材料 | |||
| 标准样品; 基准物质 | |||
| 标准试样 | |||
| 标准物质 | |||
| 参比物质; 标准材料; 基准材料 | |||
| 参考物质 | |||
| reference material: 22 phrases in 8 subjects |
| Aviation | 4 |
| Chemistry | 3 |
| Earth sciences | 3 |
| Electronics | 2 |
| Geophysics | 1 |
| Space | 4 |
| Technology | 4 |
| United Nations | 1 |