course map
| tracer
| course map | |
| skiing | 路线图 |
| tracer | |
| interntl.trade. | 失物追查单; 失物追査人 |
| math. | 示踪程序 |
| met. | 示踪; 故障探测器; 曳光器; 指示器; 测量头; 描图仪 |
| |||
| 路线图 | |||
|
course map : 2 phrases in 2 subjects |
| Oil / petroleum | 1 |
| Technology | 1 |