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| 探问信号 | |||
| 单向〔单值〕性信号; 彩色指示信号; 探向〔读出〕信号 | |||
| 探向信号 | |||
| 读出信号; 单向性信号 | |||
| sense signal: 1 phrase in 1 subject |
| Telecommunications | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips