| 1 |
00:00 222 |
| 2 |
00:00 226 |
| 3 |
00:00 199 |
| 4 |
00:00 178 |
| 5 |
00:00 208 |
| 6 |
00:00 194 |
电力变压器绕组直流电阻测量