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| 1. | a connection between an electrical device and the earth (which is a zero voltage). |
| 连结电装置和土地（零伏）的连结物。 |
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| 2. | Wagner earth device |
| (一对阻抗的连接地点) 瓦格纳接地装置 |
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| 3. | earth protective device |
| 接地保护装置 |
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| 4. | The design and commissioning of a new on-line monitoring device of transformer core earth current based |
| 介绍了一种新的基于GSM通信的变压器铁心接地电流在线监测装置的设计及调试的情况。 |
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