variable-density
| recording
| variable density | |
| geophys. | 变密度 |
| oil | 变密度 |
| recording | |
| gen. | 记录 |
| comp., MS | 錄製 |
| econ. | 记帐; 记载 |
| exhib. од. | 录制 |
| space | 录像 |
| sport. | 录音; 记录 |
| sport. од. | 唱片 |
| |||
| 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 |