reflection-time
| surface
| reflection time | |
| oil | 反射时间 |
| surface | |
| dril. | 地表; 表面化 |
| dril. од. | 外表 |
| hydroel.st. од. | 外观 |
| math. од. | 曲面 |
| met. | 表面加工; 表面处理 |
| oil | 地表 |
| swim. | 浮出水面 |
| |||
| 反射时间 | |||
|
reflection-time : 18 phrases in 8 subjects |
| Chess | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Information technology | 2 |
| Oil / petroleum | 5 |
| Technology | 5 |