direct current arc
| method
| direct current arc | |
| tech. | 直流电弧 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
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| 直流电弧 | |||
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| 直流电弧 | |||
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direct current : 4 phrases in 4 subjects |
| Oceanography & oceanology | 1 |
| Pediatrics | 1 |
| Technology | 1 |
| Wind Energy | 1 |