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| 先开后合触点; 先开后合接点 | |||
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| 先开后合 静(止)，开路接触点 | |||
| 先断后合触点 | |||
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| 先断后合触点 | |||
| break-before-make contact: 14 phrases in 8 subjects |
| Automobiles | 1 |
| Electronics | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Power system protection | 2 |
| Space | 1 |
| Technology | 5 |
| Telecommunications | 1 |
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