接近信号 | |
tech. | approach signal |
"BP 机" | |
telecom. | beeper |
机 | |
gen. | machine; apparatus; device; engine |
tech. | electric machinery; electrical machinery |
wind. | confined vortex wind machine |
BP机 | |
gen. | beeper |
| |||
approach signal |
接近信号 : 5 phrases in 3 subjects |
Communications | 2 |
Rail transport | 1 |
Technology | 2 |