| |||
| 辙尖指示器; 辙夹指示器 | |||
|
point indicator : 31 phrases in 12 subjects |
| Aviation | 2 |
| Business | 3 |
| Chemistry | 3 |
| Communications | 1 |
| Computer networks | 1 |
| Drilling | 5 |
| Earth sciences | 1 |
| Electronics | 2 |
| Geophysics | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Technology | 7 |
| |||
| 辙尖指示器; 辙夹指示器 | |||
|
point indicator : 31 phrases in 12 subjects |
| Aviation | 2 |
| Business | 3 |
| Chemistry | 3 |
| Communications | 1 |
| Computer networks | 1 |
| Drilling | 5 |
| Earth sciences | 1 |
| Electronics | 2 |
| Geophysics | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Technology | 7 |