| 1. | So electricity was able to produce magnetism !
这样看来，电能生磁！ |
| 2. | The brushes are connected to the source of electrical energy .
电刷和电能源相联接。 |
| 3. | The trolley bus picks up current from an overhead wire .
无轨电车的电能是通过架空线供给的。 |
| 4. | An electric motor turns electrical energy into mechanical energy .
电动机把电能转换成机械能。 |
| 5. | Electrical energy has to do with pushing and pulling by electric charges .
电能与电荷的吸引和排斥有关。 |
| 6. | This heating requires electricity and produces unwanted heat .
这种加热需要电能，而且会产生不需要的热。 |
| 7. | This is the first step in the transformation of light into electricity .
这是把太阳光转变为电能的第一步。 |
| 8. | The basic function of a reference electrode is to maintain a constant electrical potential .
参比电极的基本功用是维持一个恒定的电能。 |
| 9. | A much smaller power loss occurs in the cable when energy is transmitted at high voltage .
用高压输送电能时，沿输电线的功率损耗小得多。 |
| 10. | Electrical energy is so useful because it is readily converted into other kinds
电能是非常有用的，因为它可以很容易地转换成其他能量形式。 |
