core flow
| efficiency
| core flow | |
| avia. | 岩心流动 |
| efficiency | |
| adv. | 广告效果 |
| agric. | 效能 |
| auto. | 效率; 功 效; 功 率 |
| hydroel.st. | 效能 |
| interntl.trade. од. | 有效性 |
| math. | 有效性，效益 |
| met. | 效果 |
| radio.amat. од. | 效率 |
| |||
| 岩心流动 | |||
| 核心流 | |||
|
core flow : 30 phrases in 12 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Construction | 1 |
| Earth sciences | 1 |
| Electricity | 1 |
| Electronics | 13 |
| Energy industry | 1 |
| Geophysics | 1 |
| Mining | 2 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 4 |
| Technology | 3 |