| |||
equi-potential ring; arcing shield balancing ring | |||
ring manifold | |||
equalizing ring | |||
equalizer ring; piezometer ring | |||
grading ring | |||
| |||
equalizing ring |
均压 环 : 11 phrases in 5 subjects |
General | 1 |
Hydroelectric power stations | 2 |
Shipbuilding | 1 |
Sports | 2 |
Technology | 5 |