| |||
| 道岔探测器 | |||
| 点测器 | |||
| 单点检波器 | |||
| 转辙检测器; ★ 联锁箱; 道岔锁才检查器 | |||
|
points detector : 21 phrases in 9 subjects |
| Animal husbandry | 1 |
| Communications | 2 |
| Drilling | 2 |
| Nuclear physics | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Rail transport | 2 |
| Steel production | 1 |
| Technology | 10 |
| |||
| 道岔探测器 | |||
| 点测器 | |||
| 单点检波器 | |||
| 转辙检测器; ★ 联锁箱; 道岔锁才检查器 | |||
|
points detector : 21 phrases in 9 subjects |
| Animal husbandry | 1 |
| Communications | 2 |
| Drilling | 2 |
| Nuclear physics | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Rail transport | 2 |
| Steel production | 1 |
| Technology | 10 |