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用户到用户信令 | |
commun. railw. | User-to-User Signaling |
vchar 类型 | |
IT | vchar type |
类型 | |
gen. | category; form; class |
avia. | description |
desert. | pattern |
hydroel.st. | type; style |
| |||
User-to-User Signaling | |||
User-to-User Signalling |
用户到用户信令 : 3 phrases in 2 subjects |
Communications | 2 |
Rail transport | 1 |