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| 符号〔信号〕交换; 交接过程〔处理〕 | |||
| 数据交换; 符号交换过程 (同步传输系统的) | |||
| 握手 | |||
| 交接处理; 信号交换 | |||
| 信号［数据］交换; 符号交换 (同步传输系统的) | |||
| 符号交换; 交接过程; 符号变换 | |||
| 联络; 信号联络; 建立同步交换 | |||
| handshaking: 20 phrases in 10 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Cryptography | 1 |
| Electronics | 4 |
| Information technology | 5 |
| Psychology | 1 |
| Space | 1 |
| Technology | 1 |
| Telecommunications | 4 |
| Textile industry | 1 |
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