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双向运行 | |
bridg.constr. | bidirectional operation; either-direction running; either-direction traffic; either-way running |
自动闭塞 | |
commun. railw. | wireless automatic block |
railw. | automatic block system |
| |||
bidirectional operation; either-direction running; either-direction traffic; either-way running | |||
bidirectional traffic; either-way operation; two-way operation |
双向运行: 8 phrases in 2 subjects |
Rail transport | 2 |
Technology | 6 |