background value
| of
| tracer
| background value | |
| hydroel.st. | 本底值 |
| of | |
| gen. | 的; …的; 关于 …的; …做成 的; 对…; … 的 |
| tracer | |
| interntl.trade. | 失物追查单; 失物追査人 |
| math. | 示踪程序 |
| met. | 示踪; 故障探测器; 曳光器; 指示器; 测量头; 描图仪 |
| |||
| 本底值 | |||
| ★ 背景值 | |||
|
background value : 31 phrases in 10 subjects |
| Agronomy | 1 |
| Chemistry | 1 |
| Earth sciences | 4 |
| Ecology | 5 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Oceanography & oceanology | 1 |
| Scientific | 2 |
| Space | 1 |
| Technology | 14 |
| Water resources | 1 |