zero-sequence current
| directional relay
| zero sequence current | |
| el. | 零序电流 |
| directional relay | |
| el. | 定向 继电器 |
| el. meas.inst. од. | 方向继电器 |
| met. | 定向继电器; 极化继电器 |
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| 零序电流 | |||
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| 零序电流 | |||
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zero-sequence : 103 phrases in 16 subjects |