variable-density
| filter
| variable density | |
| geophys. | 变密度 |
| oil | 变密度 |
| filter | |
| gen. | 过滤 |
| environ. | 过滤器 |
| math. од. | 滤波器 |
| met. | 滤光镜; 滤纸 |
| met. од. | 滤光片; 过滤机 |
| opt. | 滤光器，滤光片 |
| racing од. | 滤器 |
| rem.sens. од. | 滤色片 |
| |||
| 变密度 | |||
| 可变密度 | |||
| |||
| 变密度记录剖面 | |||
|
variable-density : 45 phrases in 8 subjects |
| Aviation | 2 |
| Construction | 3 |
| Geophysics | 12 |
| Oil / petroleum | 5 |
| Space | 2 |
| Technology | 19 |
| Television | 1 |
| Wind Energy | 1 |