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1. | open-wire voice line |
| 明线话频线路 |
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2. | phantom wire |
| 【电】假想线路 |
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3. | printed wire layout |
| 印制线路布设 |
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4. | open-wire carrier line |
| 明线载波线路 |
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5. | wire line circuit |
| 有线线路电路 |
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6. | monitoring wire |
| 监听线|监视线路 |
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7. | wire sharing system |
| 线路共享系统 |
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8. | TWS (timed wire service) |
| 定时线路服务 |
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9. | parallel wire line |
| 平行双线线路 |
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10. | open wire telecommunication line |
| 架空明线线路 |
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