| 1 |
00:00 188 |
| 2 |
00:00 201 |
| 3 |
00:00 167 |
| 4 |
00:00 156 |
| 5 |
00:00 172 |
| 6 |
00:00 170 |
电力变压器绕组直流电阻测量