two pole | |
earth.sc. el. | bipolar |
reverse current relay | |
earth.sc. el. | relé de corrente inversa; conjuntor-disjuntor diferencial; disjuntor polarizado |
| |||
bipolar; de dois polos | |||
| |||
bipolar |
two-pole : 3 phrases in 2 subjects |
Earth sciences | 2 |
Mechanic engineering | 1 |